You get 2 or maybe 4 people in minimum rooms run up to the Lido in the
morning - capture a table for 6 by filling the chairs with books bags etc.,
and then hold the table for the day playing cards, reading books, talking
etc. Meanwhile others are looking for a place to eat their lunch.

My second favorite is people who can't dance hopping around the floor as if
infected by evil spirits bumping into to those actually trying to do real
ballroom steps. This type of behavior would not be allowed in a casino or
other area where a certain knowledge is required, but the dance floor seems
free game.
...