I am going to reply here and it is not as a camper. I have been both places numerous times, and I would stay away on the 4th of July holiday. It isn't a weekend this year. Biking might be one thing, but kayaking?? Not a good idea. That whole area will be motorboat mayhem that whole week. It normally is anyway, but the forth just makes more.
Now Biking is different. The gendarmes from the local constabulary are very serious. (In short, the cops will be out looking for drunks.) The state park and RV park (Fox Something) on South Bass are on the other end of the island from the bars and harbor.
I drove to one of those islands just once and that was to show my wife why I don't like to go there. But there are two sailboat races that end or are at one and one at the other. That is why I have ended up there. When there as part of a crew, it is hard to get away.
If you do go to Kelly's, you have to show the kids the glacial grooves.
If you want to do more kayaking, Sandusky Bay is just full of places that big load powerboats don't want to go. But mosquitoes and flys may be a problem. That is true anywhere there.
Matt
Matt & Mary Colie
A sailor, his bride and their black dogs (one dear dog is waiting for us at the bridge) going to see some dry places that have Geocaches in a coach made the year we married.