Help coming up with a rain plan for summer camp activities There is time for it to change but our summer camp wedding may be a washout.

We are coming up with a rain plan. For friday night we are thinking of screening a camping movie indoors at our indoor reception location on a projector. Other than that I've got nothing. 

We also need to fill 5 hours on Saturday afternoon/lunch. We can't hold camp activities if it's raining. We will have use of a pavilion, fields, lots of smaller stationary tents, and 3 large yurts (big enough to sleep 20 adults.) I'm thinking of holding an outdoor kickball game, slip n slide (if no lightning), "field day" games, etc.

Any help is appreciated!