I've got 21 Easter mini sessions scheduled for this Saturday and there is a 60% chance of rain. The shooting location is in the front yard of my house and I have a backdrop consisting of 2 painted fence pieces and some other small items. If it looks like rain is imminent on Friday, I'm planning to move everything under my garage and use the combination of natural light coming in from the garage opening and some continuous CFL lighting. This is obviously less than ideal, but better than having to try and reschedule or cancel altogether.
Are there any options for creating a large rain cover for the backdrop with room for me a few feet away that I'm not thinking of? I've thought about using an EZ UP tent but if lightning comes into play that won't be an option. Any other ideas?
As for shooting in the garage, any tips? I'm not planning to use flash.

