There is a hairdryer in the drawer at the vanity ... so unless you need a particular kind of hairdryer, you don't even need to bring one of those!
Some people take power bars if they are bringing along a laptop, iPod, phones, speaker system, curling iron, walkie talkies, etc. There is a double outlet on the vanity, and a single razor only outlet in the bathroom. I think there must also be an outlet behind the bed, because there is a clock radio.
You will love Mariner!!!!!