You are really pretty well covered. Other things can come out of normal non vacation spending probably. Other budget ltems for me are kennel for the dog, airport parking, food on in transit days (food and drink at the airport aren't cheap, but can make travel more pleasant), and incidentals -- luggage fees if you aren't flying Southwest, wifi for the kids if we have travel delays or for entertainment on the plane, spending on things we might have left at home, drug store items, things like maybe renting those little speed boats at one of the resort hotels, or paying to play tennis on the clay courts at the Grand Floridian.