Client Appreciation Party!

Every year, Jennifer and I host a few different client appreciation parties. This is for everyone that is currently a client of ours, as well as anyone that has been a client of ours-ever. Usually each fall we host an outing at Apple Blossom Farm near the Shoppes at Grand Prairie in Peoria but this year the time and weather got away from us, but we are looking to replace that with something else still this year. We're looking for ideas-any suggestions?