So meet at 11 and tour the island and do lunch or meet at like 1 and just head up the river, haveing everyone do there own thing for lunch before we meet?
Two beaches actually: there is one going over the bridge(towards calvert) on the left, by the water tower and there is another up the river at Williams Wharf on Battle Creek, Battle Creek is probably the better one(no people with fishing poles), but it does get filled up, if there is boats there we can raft up and hop off and swim, there is one side that is deep(for boats) and the other is shallow and goes pretty far out
Then when everyone gets hungry for dinner, head to one of the many places on the river.
P.S. dont forget to fill up the cooler so we dont get dehydrated.