It was very easy, it was only like two questions. Just where you want to work and if you would work anywhere they assign to you, takes like 5 mins

First wait for hours to take a swim test that takes ten minutes. Then if its your first summer, you have to do a week long training class. Otherwise you have to do day long testing on lifeguarding skills and cpr. Then you get an interview where you find out where you're gonna work for the summer. People get assigned to locations based on a first come first serve basis.