I'm planning a family reunion. I just reserved a shelter. I was told they don't have electricity. And don't allow generators. What can I get to pump out power for about 5 hours ?

Portable power stations are available just about everywhere and online. They work quite well depending on the brand, and they come in multiple sizes. Walmart sells several.

A large power pack would work to power small things. But anything that needs power, and is big, would be difficult to find a power pack large enough.

OK thanks I'll check online.