True, but let's break it down:
4 days /3 nights . . . and the OP has $300 (or an average of $75/day)
I'd break it down like this:
Souveniers are off the table -- they're just not possible.
Pre-trip, I'd allot $30 for groceries, and that'd be a skimpy grocery cart. Buy Crystal Light packets, crackers, candy, and other snacks. You could easily spend $300 for four people on JUST drinks and snacks.
Day 1: Travel day, I assume
Breakfast at home
$30 for lunch
$40 for dinner
Day 2: Park day
Breakfast in the room
$30 for lunch
$40 for dinner
Day 3: Park day w/ party
Breakfast in the room
$30 for lunch
$40 for dinner
$30 for taxi
Day 4: Travel day
Breakfast in the room
$30 for lunch
This assumes, of course, that you don't have to pay to park at the airport, that you aren't tipping the shuttle drivers (which I would never skip, myself), and that you don't have any type of emergency. It also assumes that you're able to say no to sodas, balloons, photographs, ice cream, penny-crunching, and all the other little expenses at Disney.
These meal allowances are super-tight. With four people, they're do-able only if you choose kids' meals, split entrees, and drink only water. They're also do-able only at counter-service restaurants; if you have to include tips, they're not possible.
Be sure to pack sunscreen, Tylenol, bandaids, and all those other little things that you have at home but cost so much when you're forced to buy them at premium park prices.
I think it's entirely too tight. I think you will be out of money on vacation. I'd say that something has to change. Things I'd consider:
- Is it possible to change to a less expensive hotel?
- You're at a hotel with a great pool. How about doing away with one park day and making it a pool day? Even if you already have your tickets, you'd save by being able to cook in the room (bring things you already have at home). Your kids will see this as big fun or as a letdown, depending upon how you present it.
- Skip the extra-ticket party and just have three park days.
- Make a grocery store stop and pick up lunch fixings for every day. This'd allow you to have a nice dinner every night, but I doubt you'd be able to fit that much food into your suitcases, so you'd need to figure out a grocery stop -- and that'd cut into your savings.
Personally, assuming all these things are possible, I'd change hotels and skip the Halloween party. That'd still not give you a fat budget, but it could make the budet more comfortable.