Restroom Facilities - Do You Provide?

As my show has become more interactive and people are getting out of their cars to participate in the IR Reindeer headsets, I am starting to get requests to use our restroom in the house.

If I know the people (friends, relatives, neighbors, my wife...), no problem... but complete strangers are making requests. I don't want to be in-hospitable, but I really didn't plan on providing general public restrooms with the light show.

Your thoughts? Anybody getting similar requests?

Regards,
Lightman