Ask Experts & Get Answers to Your Questions - ASAP
Agree that having just a small bathroom would not be enough for 70+ guests for an informal cookout such as this. What I might suggest is to rent the porta-potty as well as have the small bathroom available for those that do not want to use the rental. This way you have coverage for everyone that needs to use these services over the long cookout.
A bit more in price as there is something called a "restroom trailer" if you wish to spend:
Otherwise a porta-potty should be just fine along with your small bathroom.
Have a wonderful cookout!
I hope that this information was found useful as please inform me of any additional questions/concerns you have. Also if you could take a second to rate my assistance so that I know my help was found useful today.