This year's mix-up meetup will be the weekend of September 23-24.
At last year's meetup, we visited the Wright Patterson Air Force museum in the morning, and then after it closed, adjourned to a local retro-games arcade for pizza, snacks, and drinks. I was able to host people who needed a place to crash afterward, but don't have the same situation this year.
This year we will be reserving a party room at the same retro-games arcade, and some cabins at a local campground. This will cover the night of the 23rd. On Sunday, the 24th there will be a trip to the Ohio Renaissance Faire.
Needless to say, three of those things will involve expenses and there will be a fundraiser to cover them. This will determine how much food & drinks and accompanying tokens are prepaid at the arcade, how many campers-worth of cabins will be rented, and how many advance-purchase tickets to the Ren will be bought.
Aside from that, everywhere we are going is open to the public. Anyone who only wants to participate in part of the weekend's events can visit the museum with us, buy Ren tickets & visit the Faire with us, or go to the arcade with us and buy their own food and tokens... but space at the cabins will be limited, with fundraiser donors getting priority.
I will update as soon as there is more information, except that the name of the arcade and the name of the campground will not be announced until closer to the event, for the usual reasons.