Hi Gary,
It's always nice to receive a question from a fellow Brit!
Not a lot of information has been released officially as of yet about the standard
The Little Mermaid rooms at
Disney's Art of Animation Resort. Family suites are due to open in May 2012 and standard rooms are currently scheduled to open on 31 December 2012.
From what I have seen, it looks as though each standard room will consist of two double beds and will sleep up to four Guests and have not seen any mention of the Inovabeds being available in the standard rooms.
I would recommend that you subscribe to the
Disney Parks Blog to make sure that you receive all future updates about this brand new Resort hotel as it becomes available.
In order to solve your problem, would suggest a room at Disney's Port Orleans Resort - Riverside where some of the rooms offer a trundle bed in addition to two double-size beds. (Trundle beds are 35" X 65" and are not recommended for Guests over 9 years of age)
If I can be of any further help with your planning please don't hesitate to visit us again and ask me another question.
Wishing you a magical holiday filled with memories which will last a lifetime!