Thank you everyone for your advice.
In the end, I asked them at check in.
They were full so couldnt upgrade my room, but gave us access to the gym (which usually costs extra) and sent up to our room a plate of fruit and 2 big cold bottles of water (worth at least $25, hotel pricing).
Now my question is,
Is there a way to either get my 1 free night for next year upgraded to a suite, or cancel and reopen and get the 2 free nights in suites like this time?
thanks again