It's been a while since I last got around to testing this game, I will say, plenty of OOB areas in the pirate ship starting area.
Also apparently you can roll Rudy over the generator in the experiment 4 room (See below)
I am also curious if we will end up getting the berried status effect for party members.
Also haven't gotten around to finding that berry queen or her sanctum, got to replay that at a later time though. Overall not too bad.
Edit: I just remembered this while testing:
1. Apparently if you have a 5 party member, you can obstruct Rudy's ability to move provided the last or 2nd to last member is in the path when you interact (Ex. starting from the top, move left 1, down 3, then right 1 will put the 5th party member in the upwards direction, and blocks movement of Rudy)
2. I find that the puzzle is pretty cakewalk due to the fact you don't have to wait for Rudy to fully finish rolling before interacting with her again, I don't know if this is intentional or not but it does make it easier for some puzzles as you can start rolling Rudy and then change her direction of travel by moving and interacting with her at a different position.