Teacher:Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Teacher: Now, understand the problem? Solve this instance: I'm travelling from Munich to Bangkok via Muscat at the end of September (economy class, so no lounge available). The Airport in which I'll land will be the Suvarnabhumi International Airport and the local time will be 8.00.  

My parents will be flying with a different plane, which will land at the same airport at 13.00.
Provided that we already reserved our hotel in BKK and I asked if I could do an early check-in, to which they replied that I had to pay a night more (didn't expect that from a 5 stars hotel), I see myself bored as hell, sweat-stinky (apparently there's no possibility to take a shower in that airport), waiting on a bench with all my (heavy) stuff around. I would very much like to avoid that.
What are my best options (money/time/relax-wise)?


Could I do anything decent enough to spend a couple of hours in the airport (possibly having my baggage stored anywhere?
Should I go to the hotel and try to see if they can make me check-in anyway (and try not to pay more)?
Should I surrender to the hotel's policy and have my room ready for me by paying a night more?
Should I go to the hotel, store my things and go out strolling a bit (with jet-lag, without shower and so on...)?


Student:
5 Hours (at least) to spend in BKK Suvarnabhumi or what else?