While visiting Disney World is a wonderful vacation, it's really tough for a 'family reunion'. Before or after going to the park is good for getting together as a family, but trying to stay together at the park is difficult to do, especially if it's not a small get together. Everybody wants to do different things and it's very crowded, so it's always better just to let everyone do their own thing and then have a meeting time and place for lunch.
Better yet, if you haven't seen each other in a long time and really want to have some quality time together with the family, a cruise would be much more enjoyable. Yes, the Disney park would offer a great opportunity for fun, but it doesn't really give you much quiet time, except, like I said, before or after the park. So it really depends on what you're looking for in getting together.
I know we've done family reunions in various places, but our most enjoyable time was when we could just relax and enjoy each other, like at a huge house at the beach or in the mountains. But if we can all afford it, a cruise has always been the best option.
Just a thought.
__________________ Travel Agent/Cruise Specialist w/13 yrs exp and 48 Cruises on 11 cruise lines! Favorites: Paul Gauguin - Tahiti: Uniworld River Cruises - Europe; Celebrity Solstice-class ships; Holland America - 12-nights Baltics & Russia; RCCL - 14-nights Greek Isles, Turkey, & Croatia; Holland America - 14-day Alaskan cruisetour; 10-night Canada/New England cruise; 21 days Hawaii w/7-night NCL cruise; Oceania - 25 days in Asia; more than 3 months touring Europe by train. And many all-inclusive resorts!