Welcome to the DIS if I didn't already say it!! Okay so here's my thoughts, if you are gonna stay at your hotel a lot to take advantage of teh offerings, then it would be alright. But if you plan on being in the parks and not walking all the way back to the DLH for a bottle of water (we bring our own, the same Dasani's they sell for $2.50, I pay $4.99 for 24 that lasts our whole trip!) then it wouldn't be worth it to me.
It usually runs about $150 a night on top of your regular room cost, adn we definitely DO NOT eat $150 worth of drinks and snacks per day. If I was getting all 3 full meals with it, then maybe. But I still wouldn't want to eat each meal there since I like different restaurants around the resort.
This is JMHO, for us it is not worth it. I can eat really great in the parks all day for less than $150. Maybe if it was 5 adults in the room, it might be a better deal maybe. But since you don't get anything extra really besides that, it's not for us. Anyone staying on site can use vacation planning and all the resources, so even that's not exclusive.
Good luck deciding!
Andrea