julz, pls, u will need virtually nothing, i promise.
if u have a washing machine, they provide tablets, and if u need more if u call housekeeping they ll deliver them... whats the point in buying stuff you can get for free (just saying

)
yes, lots of bottles of water, we froze them in freezer, and attached them to our bottle straps, bru and i had 1 each, and then we had a few more ffrozen ones we left in a freezer bag in the car, by the time we got back to car they were cold still, and very welcome, then we d re fill them at restaurants or water fountains (car bottles=very good idea!!)
beer, yes, if u have a car, u can get them from dtd petrol station, all a few stores a few 100m from dtd.
id add sun block (spray version, its amazing lasts all day and is much better than uk versions)
snacks- really mate, ur kids are the same age as mine when we went 1st time on
ddp, and we had loads left over, u can grab a snack of grapes etc, they can share the pot, or if (like me u have to have stuff on u in lines) get some teddy graphams etc.
dont worry about bfast in the room, stop at msb on the way out and pick up pastry (they re huge) or ask for desserts to go - yes i had cheesecake for bfast many a day- who cares ur on holiday?!?!?

(or french bakery, or writers stop - get the idea??)
or u can go to the cs at hotel and share... with the heat and the excitment after a few days kids wont want to eat, we ended up giving away cs meals to people not on ddp (not allowed i know...) and bringing home 38 rice crispy mickey heads from sc left over!! we couls have easily had an extra coffee/ice cream/ pastry.. but saved rather than wasting them at the beginnign and in the end we just didnt want them....
out of 14 days ddp i think we had 7 breakfasts ts and 7 ts dinners, we just couldnt eat the food mate....
hth
tracy
ps coffee is provided in the room too- again ask if u need more, if ur kids "need" something to get them going in the morning, order it, we did pick up chocolate milk to heat in mi crowave and OJ after a few days, *** it helped getting them out of bed for RD, if not, ask for oj with meals at hotel and use refillable mugs for sodas when eating on site.... u ll prob find u take alot of cs meals on site to go and eat them in room, *** kids r tired or on sensory overload, or just want to chill by pool, so u can get the cs to eat poolside!!!!