It´s OK.

I forgot to mention that sometimes in "half board" the bigger meal, you are supossed to have has to be a certain one: It as to be lunch or it has to be dinner (I am not pretty sure for I don't usually pick HB), but if you bought it and were interested in having the supper, for example, instead of lunch or "vice versa", I believe sometimes you can change them upon reaching the hotel. But don't count it for sure.