I thought the same thing Fran and it's why I suggested an early afternoon visit to the R&RHoF followed by an early dinner at Shooters (or somewhere else we found that allowed us to all be together). The reason I suggested Shooters is because on a warm summer day the view is lovely and there is a boardwalk right outside that people sit on and drink/talk. They even set tables up out there for dinner but it would have to be before the dinner hour because they take them down for music.
We also have a lovely park system and I know of several locations where we can picnic and all be together. There is one location that is actually quite near my home that has paddleboats and a lovely hiking trail around the lake. I don't know what time everyone is planning on getting here, but if it's early Friday that would be a good thing to do then.
The whole thing will depend on what we decide for the itinerary. We can plug things in and of course some can do other things that may interest them. Cleveland is not a tourist town in the sense that everything is located near each other. It's spread out and while there are many neat things to see, you have to drive a fair distance to get there.
Nancy