Engagement Party Ideas

So FH and I want to have an Engagement Party to just celebrate the Engagement with our bridal party and close family members. We're looking for a place that is somewhat 'cheap' as we really want the wedding to be the big thing. Can anyone recommend some ideas? Outdoor places and indoor places would be great, because I know the outdoor would help with the price, but I really do not like the outdoors very much so it's a toss up lol! Any suggestions?

We're looking for something that will work for between 50 and 60/65 people.