Course Code: B12-VP2-4QF
The description, "probably a very hard level for you" combined with it being in longest clear checks made me think "this is either going to be horrific or have massive cheese". Turns out it was the later!
So you got an airship course that's.. fine. Like sure there's a sniper thwomp and its easy to lose to hitting the P-Switch too early, but these feel more like defects from an inexperienced maker than outright malice.
The cheese here is twofold. First, there's that first key, it's supposed to be for a very meager bonus room that's just "here's a 50 coin near the blocked off flagpole". But I just take it so I can cheese the 2 bosses!
2nd Part of the cheese is ignoring Ludwig, grabbing Link, and... breaking the ice block arena so I can skip Bowser and go right to the goal! Like, this could have easily been solved by using ground blocks, but it seems the creator was so hell bent on ice that they forgot about Link being able to blast it in that part!
The funny thing is that the intended path DOES involve breaking ice blocks, but the over 7 minute clear check time makes me think that the creator just... didn't think about how this can be used to skip both boss fights!
Oh well, I think this creator had their heart in the right place even if this is an unfocused course that has a description that's more bark than bite... I gave it an A for effort and gave it a like!