Like Damo mentioned...The meal deal is prob not worth it. It may be for the kid if they eat a lot. But the pick for kids meal is like PBnJ and I believe 2 other things. The selection is very limited. But generally you would need to eat 3 times in the park to make the price worth it. In usually a 6 hr timespan depending on when you go.
http://www.universalorlando.com/Tickets/tickets_2.aspx?ComponentId=11423&SourcePageId=7805#13
There is the link for the ticket page. If it were me I would save the $10 and get the 1 park each day so you could pick a day to do a park and do it that way w/o the hopper. But I am cheap.
The hotels are nice...They are all 4 stars so its not a huge difference on which to stay in. I don't believe I have stayed at Portofino before but the other 2 are great. Mom booked one night in May last night and for some reason HRH was cheaper then RPR...Never seen it that way before.
But I think Super Saver rate is prob your best bet for that length of time. Also if you are going to have a car keep in mind its pretty expensive for parking. $15 a night ish iirc.
As for if there is enough to do for 7 days?....Well imo you could do it shorter time. Its great park and the Potter will def draw in some crowds but I think 4-5 is sufficient to see everything you would like to see. Esp with only one kid.
As for the restaurants...I enjoy Margaritaville in Citywalk. Lots will tell you Mythos is great. I wasn't a fan, not my type of food. But the atmosphere is rly cool.
Crowds in comparison to Disney would be tough to call atm. Seeing as Potter should bring in the crowds. With Express you should be able to get on any ride within 30m though w/o a prob. Except maybe the new one.
http://www.universalorlando.com/Hot...s.aspx?ComponentId=10976&SourcePageId=10651#5
Hotel deals...Stay 7 nights for the price of 4. In Aug for 7 nights I got a deal of about $153 a night for RPR...So $1071 in total.
Anyway enjoy your trip...Hope my info helps. Good luck.