Connecting rooms are guaranteed if you have, for example, 2 adults and then 2,3,4, etc. children. If you have a 3rd adult then they don't guarantee because that 3rd adult could be in the 2nd room with some children.
We originally had 2 rooms booked and our reservation said "Guaranteed connecting rooms for families". We have switched to a 1br suite because we want more room to move around.
Just mention it when you call to make a ressie if you need connecting rooms and you fall into the proper guidelines.
I don't know what guaranteed connecting rooms does to your chances of getting or not getting the view you want. Let's say you book 2 connecting pool view rooms and when you check in they only have connecting rooms with a savannah view-maybe you would get upgraged.
Also, I thought I read somewhere on these boards that someone booke a 1br suite and they checked in and it was a King bed in the bedroom and they didn't have enough sleeping room for their family-so I don't know if you have to request 2 queens in your sleeping room when you book a suite-I am going to call back and make sure we have 2 queens.
I'm really glad I booked the suite and can't wait to go.