My son and his girlfriend did LHR-PRG and back again this week. They were in CE (lowly blues) and neither got their first choice (service from front to rear and they were in row 4) on both flights. They were both sick though and the only meal they had the same was their return flight on Wednesday evening. They said they both had the pasta which didn't taste great. I've not heard of food poisoning from pasta (neither could say what was in it) but they are convinced it was that.