I have stayed in the HTOP in Calella twice and didn't take so much as a crumb out of the dinning room and that isn't because of any notices it's because we had access to food etc at the airport.

In Ostend we stayed in the Royal Astor which is part of the Westminster chain. There wasn't any notices regarding removing food from the dining room or I'm sure we wouldn't have made our buns up on the table & then put them in our Tupperware. I would be very upset if, when we arrived at the hotel for breakfast on day 2, it would be to the day befores old ham, buns & boiled eggs that had been served to the previous days customers. The ham/buns especially would have been on an open plate from 7-9 already, then I presume chilled to be brought out again 24 hrs later.....

We did actually think of buying a pre packed sandwich prior to departure & had checked them out in the local Spar type shop, however a lot were chicken/egg/bacon and as we didn't have access to a fridge, and our room (well in fact the whole hotel) was exceptionally hot we decided against it as we didn't want to spend 11 hours in the bus's toilet

Here's my report where I mention the heat in the room/hotel:- http://www.holidaytruths.co.uk/reviews/belgium/ostend/royal-astor-hotel/