Ear plugs are a good idea for most gaming EXCEPT craps.
They work well during a flight as well.
The Downtown Grand supplies them in your rooms-noisy music at night.
I use electronic ear muffs at the gun range and they work great, but you wouldn't be allowed to wear them at a table game.
I hear that the music is not so loud at the D's second floor. True?
It takes extra energy to fight off loud noises/music/background noise.