How many people can fit on the benches, and do you have to reserve or is it first come first serve

yeah pretty much first come first serve public shelters. very large though easily able to accommodate a multi-family gathering. clean place to.

You can fit probably 10 people and there are shelters for a whole family with reservation or you can follow the first come first served of you want

You can reserve covered areas through the parks service. It's probably all online now. If someone tries taking your space that you've reserved, they are obliged to move. It some hold larger groups than others.