For all of the 2nd day and most of the 3rd not much happens. You can make posts describing what you do or say during this time and always feel free to roleplay among each other. (some combination of 2 survival checks and/or 2 uses of rations should be accounted for during these 2 days)

In the late evening of the 3rd day the sounds of drums can be heard in the distance.

(what is Irraxan doing during this time?)

Bow will be joining in some small talk about what others think of what is happening at Laurentiis; his opinion will come after he hears from others.

No further instructions.

Z uses an action to temporarily dismiss Irraxan to a pocket dimension. (No distance limit)

He then uses a second action to make his familiar reappear within 30ft.

So the return trip only takes 12 seconds. @Tempe: that's how the Imp gets back. Much easier :)

Randall:

Randall leads the way (with help if anyone would like to aid), watching for any hazards or possible sites of interest as they travel, as well as keeping an eye out for small game, nuts, berries, etc.

Survival with help:  27

Survival with help:  24

Getting such nice rolls means no one has to use up any rations they have for day 2 and 3.

As the day draws to a close and with only about an hour of daylight left in the 3rd day you all begin to hear the faint sounds of drumming being carried on the wind.

Petcan taps a couple of them on the shoulders and starts towards the sound of the drumming. 

Tempe whispers "Well, this is why we're here." he heads that way too.

Bow follows the rest towards the drumming, on the way he makes sure his bow is in his hands.

(How far does the drumming seem?)

"Let's try to be quite and see if we can find out what is happening before encountering what ever it is." 

Stealth: 22

You all come to the edge of a clearing, but by remaining back and taking advantage of the trees, bushes, and shrubs you are not noticed by the natives.

There are only 3 on the opposite side of the clearing and they are the source of the drumming as each are playing a set of bongos. They wear simple, handmade clothing and 2 have a crude stone axe secured at their waist, while the last has a pouch.

In the very middle of the clearing is a 10 foot diameter hole in the ground. Spread out around this hole are a half dozen strange flowers. They are medium sized and end in a blossom of dark purple petals. They slowing sway back and forth in a sinuous motion and occasionally emit a little spray of light purple mist which hangs in the air briefly before being drawn down into the hole by a natural reverse draft.

The clearing itself is more of an oval than a perfect circle, being 60 feet from you and the natives, but only 45 feet wide.

Randall:

Watching carefully, Randall scans the area for any more clues of what is going on here, and he tries to understand why the natives are drumming—are they influencing the strange plants with their drumming?  Perhaps there is something in that pit they are trying to drug with the plant’s emissions?

Perception:  25

Insight:  20

The flowers seem ominous. Could the drums be some ritual to placate some form of creature? Surely there must be more natives around as well. 

Perhaps we should send a couple of non-threatening (high CHA) party member in to parley with the rest of the party hidden and ready to pounce if it turns violent. 

Z instructs Irraxan to turn itself invisible and scout around the periphery of the clearing (near ground and also from higher in the air) as well as behind the drummers for more natives. He instructs Irraxan to stay well clear of the flowers for the time being.

It is such a strange scene unfolding before you... did the plants come out of the hole and are now being held at bay?... is the mist drugging the natives to play music for the dancing plants?...

Even with such a high roll the entire thing is beyond odd and beyond understanding without further interaction. The one thing you know for certain, the drumming and the plant's movements are connected in some way. Also, the natives wear peaceful expressions on their faces. No fear or anything else, just intent and dedicated to playing their drums.

Irraxan doesn't spot any other natives nearby but can easily see a well worn footpath from the air. It begins behind the natives and leads away from the clearing.

Irraxan is to follow that path, remaining invisible. Also still in crow form (just in case something has ability to see invisibility but not actual true sight)

Petcan gestures for everyone to wait, and he moves forward into sight of the drummers. He doesn’t interrupt, yet. Just moving forward to be acknowledged, and watching for anyone else who might be around. 

Keep about ten feet between himself and the flowers. 

Randall:

As Petcan starts to move out, Randall taps him on the shoulder as he goes, saying, “Lightbringer be with you.” (Guidance).

Tempe looks upon the scene and thinks upon the plants and the people nature 18

Bow imbues his handbow, you know, just in case.

He takes 2 damage.

Irraxan flies off following the path.

When Petcan steps out into the open the native with the pouch stops drumming, stands and points toward the plants. She speaks clearly and loud, "Beware the Purplewrath!"

As Petcan moves forward, keeping a good 10 feet between him and the strange plants, one of the plants turns it's bulb towards him. The next second it rushes toward you and engages in melee.

(Gonna try something a little different for initiative. Each player will start their post with an initiative roll and then post their turn for round 1. When all 5 players have posted their turns I will do a brief summary for round 1, and call for round 2 to begin.)

(Everyone is up. Roll initiative and make your post for your turn in round 1.)

Petcan initiative 13 

Petcan sees the aggression and heaves a great breath and when he breathes out, a great wall of fire appears around the flowers 

The inside of the wall is the damaging side. Anything within 10 feet has to succeed on a DC 15 Dex save or take 29 fire damage. Anything that ends its turn inside the wall or passes through it, takes 23 fire damage (no save). 
edit for clarity: targeting around the hole, including the flowers