Um, we go without anything if we can. And if DH is wearing his cargo shorts, we go bagless and it makes our experience SO much nicer. The more I visit, the less I carry in with me. Course I don't have children...
All I need is inhaler, cell phone, ID and money, camera. Sometimes I carry a lightweight jacket with me during certain times of the year, but not always.
When I do carry a bag, I prefer my lightweight drawstring backpack.