Yes, we definitely can cut back on eating out. I talked to DH about that the other night. I used to be really good at having meals prepared in advance in the freezer for busy nights, but then honestly got slack about it. I would suspect that if we stop eating out we could easily save another $75 a month.
As far as cutting back on the budget for the trip, short of sleeping in a car on the side of the road, lol, that's as cheap as we can possibly get it. That's using the sale (getting ASMovies for $88 per night), planning on buying a loaf of bread for breakfast, meal sharing/buying the cheapest food possible, doing 4 nights and only 2 day base tickets and assuming we can get a great sale with Frontier, and packing extremely light to save on luggage, lol. We already have another vacation booked for earlier in the summer which is for the whole family (DH isn't coming with us to Disney), so the bulk of our vacation budget is going to that trip. That $2000 also is figured in our own Canadian funds, too, so may be why it seems a bit higher.