As of today you have about seven weeks not indluding the week of the reunion itself.

In order for the reunion to be a succes with few time constraints a less financial strain simplicity is the key.
Consider these suggestions.

Morning: Breakfast at local buffet

Touring local museums

Noon: Picnic lunch in the park (pot luck)

Feature "story time" for children where elder gathers youth together
and tells them the history of the family

Feature a table with artifacts and genealogy presentation

Awards and ackcowlegement ceremoney

Evening: Taking in local shows such as dinner theater

If these are workable go for it. If not I suggest you contact a Family Reunion Planner who can access your needs and get you off and running. If you haven't received help as of yet contact us.