We have stayed in the entry level suite multiple times with my 2 kids, and the staff were always happy to send us 2 rollaway beds (The first year I called ahead of time to confirm that it would be OK just to be safe). The suite is certainly big enough for the rollaways, and you are correct that the sofa is not a pull out bed.
My kids are now 12 and 14, so this year we are going to book 2 regular rooms vs a suite (mostly for the sake of having an additional bathroom); but the suite option with rollaways always suited us just fine. Hope this helps.