>> Use BANKAI on Locker 110 and see if there's a blue keycard in it

No matter what you try, the LOCKER DOOR won't open. Besides, it sounds as if the LOCKER's owner is going to be receiving the BLUE KEYCARD at the actual meeting, which probably hasn't happened yet.

>> See if you can find the owner of the note

The owner of the note is, undoubtably, a high-level MANAGER. You probably don't want to be bumping into him/her, because you really have no excuse for being here.

>> Eat some chicken strips

You would, if you had some CHICKEN STRIPS.

>> EAT THE NOTE

What note? *munch munch*

>> Do a backflip

You start doing BACKFLIPS like it's nobody's business. You're pretty good at it, too, so you keep going for a while! What fun!