And the main pressing issue seems to be the Aramark outlets in Alton Towers (we had two rounds of Aramark food in Legoland, in the pirare area; a bit pricy for what it was and not the same flare as the food had at Paultons, but similar portions and we survived).
Skimming the reviews the Aramark food at Thorpe Park, etc, mostly illicits a "eh..." rather than the "ugh!" at Alton Towers (again I personally think the awkward, semi-remote location not helping with local supplies and staff recruitment/retention play a role).
Also the elephant in the room is the fast food imdustry being crisis and getting overpriced, plus the contracts with PepsiCo that may been signed by Tussauds around the time the Berlin Wall fell must've been getting harder and harder for Merlin to keep renewing....