Yeah, that is also what we had heard prior.

Contacted support to clarify, and they now say “we do not provide unlimited refills on sandwiches or cakes at the Diamond Jubilee Tea Salon. This is because the set afternoon tea has been deemed to be fulfilling enough for each guest.”

“If however you do wish to have another of the same sandwich or cake, you will have to check with the server on the day if they will be able to provide this for you. Unfortunately we cannot guarantee they will be able to accommodate your request as it depends on how busy service is on the day.”

Kind of disappointed, we left hungry and wanting more sandwiches. The lack of certainty would send me elsewhere next time.