Our daughter got engaged a bunch of years ago while we were on a Disney vacaiton. She did the college program, met a guy while there and they came back to Ohio so she could finish her degree and then on one of our vacations, yes, they both came along, he proposed to her in the MK where they first met.
Talk about nerves, he was carrying the ring all morning in his pocket, he asked us for her hand long before and wanted us along on the vacation, we were huge WDW goers anyway, and checking his pocket all day, sweating until the exact time and place they met, he got down on one knee, hundreds of guests all over, and proposed, brought tears to me and my wifes eyes, really a treasured moment for us and taped too.