I have looked at vacations from an MMM-type of perspective since finding this site. If I don't take vacation, I increase my odds of making bonus substantially, so let's just make up some numbers (totally made up), say $10,000 extra dollars annually. Also, if I sell that vacation time back to my employer, I get (again totally inaccurate) $3,000. If I was to spend $2,000 on the vacation, and don't sell the time back, then there's $5,000 lost, and if I extrapolate that 1/4 of my bonus is lost, that's another $2,500 lost, for a total of $7,500! Ok, Uncle Sam will have taken 33% (made up), so an final cost of about $5,000 after taxes, and if you skipped 4 weeks of vacation in a year, that's $20,000.
I'm not advocating skipping vacation, just highlighting some possible hidden costs of that $2,000 vacation. It really shocked me when I first added this up, so have skipped quite a bit of my own vacation recently, and saved A LOT.
From a tax perspective, it's usually better to take more time off and work more years. From emotional health and family health and physical health standpoints, that's probably also the better approach, but it has been fun over the last couple of years boosting the heck out of my savings by taking the opposite approach.
Just my 2 cents - and again - I'm not advocating that anyone do this but if you really need to boost savings temporarily, it might be worth considering.
And back to the OP: Yes, I agree with the other posters, a Disney vacation will provide a lifetime of priceless memories, so my vote is that you go.