I normally use disposables while traveling except when I know where I'm staying has a washer/dryer. My wife and I rent a Condo In Pensacola every fall and it has a washer, so I'm happy I get to take along my cloth diapers and plastic pants. Most hotels have a washer/dryer just like cruise ships have. If you have the time to wash and dry them, then by all means take cloth along!
Sandy is right about the swim diaper. I have a pair, but it's only usefull for me as I lounge around the pool and take a quick dip in the pool. Once you're in the pool, the swim diaper is going to soak up the pool water.
I would just be carefull wearing a cloth diaper with diaper pins going through security at the airport. The pins my set off the alarm and then you are there trying to explain your situation.

I usually wear my normal disposable with a booster pad. I don't mind changing in the airport before I reach my hotel. Good Luck! ......Paul Martin