i own a toolkit and a first. it fits about the same as a first, maybe even more. it has an accordian-like style, so it can be very fully packed and then expands. it does look funny when fully packed though, almost manly? because the shape becomes like a real toolbox, quite boxy and not slouchy. it doesn't have the slouch the other bals do, even when empty. the inside space is very generous, with the middle compartment having the most room. they all zip, so i feel very secure carrying it. it won't fit a full size water bottle, but a large wallet easily goes inside. the inside reminds me of the lv pochette metis b/c the compartments are the same, except the bal zips. i would take it to disneyland, but for myself, not a family, you know? it would fit your own stuff - like camera, snacks, makeup, etc., but i can't see it holding stuff for other people too.