IMO: If you hate to do that but it is a playtest and it is in the rules, then that is the feedback you should give the developer. Give them the XP as per the playtest rules exactly, note any issues that creates (including how it made you feel), and report the outcome to the developers. Making changes during the playtest to resolve issues defeats the point of a playtest (unless it is to have suggestions for fixing perceived issues).Yeah. I would use milestone if given the opportunity, but cannot since we're doing a playtest and I want it more accurate than whatever I feel like.
The actual rules give nothing unless it's for killing/defeating/avoiding monsters and collecting treasure. By the book, they get nothing for the session, but I hate to do that.