There in most venues, clubs, etc they have a drumset already, so all you need is a pair of sticks, a pedal, cymbals and a snare. This is kinda good, but as a consequence those sets are quite worn off. So you don`t know what you`ll be playing on the next time. It could be a nice yamaha or tama set or just a half dead maxtone set with heads fixed with tape and stuff like that. So once i had to use my shoe laces to tie the snare stand to not to let it move away. Lots of stands aren`t adjustable because they`re are simply broken and fixed with the tape, and no drum throne - just a bar stool instead. So imagine a drummer sitting on a bar stool, with the snare lower his knees, hats 2 inches higher, the legs of the kick drum are too short that the drum swings from left to right when you hit the rack tom. So in such situations you should be prepared
That happens not that often though and most clubs have bearable drumsets, but sometimes you just get surprised
