Hi! Hopefully this reply isn't too late but thank you so much for taking the time to play our game. Reading stuff like this is amazing and we're really happy that you and your girlfriend were able to enjoy it. <3

You can't do this from within the game, but some people have played online using Parsec co-play: 

https://parsecgaming.com

Thank you! Glad you both had fun :D

campers cannot be rotated/rearranged, if you keep exploring you will see how to get the L shape :)

If you downloaded Trail Mix and you started at the level door for a level called 'Roll Away' please either head to the left of the level select to reach the first level or delete your save file.

Quick Update! Our most recent upload included Save data from another playthrough. We've updated the download on itch to fix this. To enjoy the full game from the start, please delete the "saves" folder to refresh the game. Sorry for the confusion!!!