I went for 4 days last year on a trip that included staying in the camp grounds for a few days in my MIL's motor home, visiting with DH's grandfather in Port Orange (he's 95, gotta visit grandpa whenever possible) and then down to the keys to spend some time with my father in law and step mother in law.
I would have loved a full vacation but it was enough of a Disney fix to get my by till my next trip
4 days wouldn't be nearly enough imo for a first trip but for off years it would do. I'm planning on a long weekend next year for my 40th b-day. DH said I could spend it in WDW
