I know PokeSponge made a topic similar to this once upon a time (I think it was last fall) but there is no use in bumping an old thread so I'll just recreate it.
So pretty much what would you do if you could spend a whole day in Bikini Bottom?
I'll start.
1) I would go to the Krusty Krab to try a krabby patty to see what's so good about them
2) I would buy another patty and give it to Plankton
3) Go to Glove World
4) Chill with Patrick since he is awesome
More things I would do coming later