They would have to just hang out and not really be able to leave for 5-6 hours while our other friend is working, but could do their own thing. Basically they are just there for safety reasons if anything happens to our friend doing the work who we have a fair price established. First friend has a lot of sedentary hobbies so boredom isn't a risk but I want to treat them fairly.
That was sort of my assessment too. Thanks for the sanity check. I just didn't want to throw out a number and seem like a scrooge.