Sorry to bump the thread, but out of interest, why is it that Alton Towers won't let 3 adults stay in a room together?
I only ask because I was talking to my mum about it and she thought it was a "disgraceful" policy; the conversation spurred after looking at Europa's room rates and being surprised that Europa let us all stay in a room together without hesitation.
For some idea, we recently booked a Standard Room Plus at Europa Park's Hotel Castillo Alcazar from 26th-30th April 2022, and the base rate for this room (our was more due to us adding park tickets, and I believe we also went for the more flexible rate) was the equivalent of £983, and Castillo Alcazar was not the cheapest hotel on offer at Europa Park for our dates.
By comparison, going to Alton Towers with the same booking stats nets me a minimum price of £1,856 at the CBeebies Land Hotel, with my only alternative being an Enchanted Village Treehouse at £4,703. When I changed our group info to have me as a 15 year old child instead of an adult... the price went down two fold, with £1,096 at the Alton Towers Hotel being the cheapest available. Admittedly, no standard rooms were available, but making you book two rooms for 3 adults does significantly drive the price up anyway.
Is there a reason for this? Is it something to do with the size/weight capacity of the bunk beds and pullout bed not being able to handle a full-size adult or something?