But DLP is expensive. I remember paying about £400 for two days in Feb a few years ago just for me and DD who was only 4. We stayed at the Santa Fe (?) But she had the most brilliant time and still talks about it.
And then we stayed at the Davy Crockett ranch when the kids were 12, 11 and 7. The older 2 aren't really into theme parks - or Disney (!) but they had an absolute blast.
Remember you are 3 adults plus 3 kids, none of whom are under the magic age of 7 (so much cheaper or free). I think taking that many people in the school holidays is always going to be expensive.
(Why not bring back some novelty Mickey Mouse slippers to warm your feet in the cold winter months? That should compensate for the lack of a boiler. You can look at your feet and think, 'Happy Times'...)