I just... Never know when to unfriend or friend or what to do in a certain room... It's hard to remember whats gonna happen in every single room! And i know that most experienced players know what to expect, but the Guest Star route is a bit complex. (Btw it would be a meta knight guide but there could be other characters guide)

If you look on the strats thread I made a moment filled with MK strats that pretty shows the route

OK Thank you for that, but i still feel like i need a bit of help, like again i don't know where to friend and unfriend... Maybe there could be something for that?

Just friend things after a boss fight (unless there is another one very closely after) and unfriend at the big door