Man I'm so jealous!!!
I used to live there for a few years. It is probably the most beautiful place I have ever been.
My sister lives there full time and manages an outfitter in town. It's call Acadia Bike and Coastal Kyaking. 48 Cottage Street.
If you stop by ask for Kay and tell her Will (her brother) sent you. She can set you up on some very nice
guided kyaking trips or if you want to rent bikes she can help you there also.
There are about 60+ miles of cariage roads (vehicle free) that weave in and out of the park. The park loop road is also great to ride around and take pictures in the car.
If your an early riser you have to go and see the sunrise on top of cadilac mountain. It is possibly the most breathtaking scenery I have ever seen. There are hundres of miles of hiking trails and tons of place to rock climb if your into that.
As for food:
Take your wife to Beals Lobster Pound. You can pick your lobster out yourself and they will prepare it for you.
It's in Southwest Harbor and is about a 10 minute drive from Bar Harbor. It's very casual and if the weathers nice you can dine outside.
For a Steak I would go to Momma Dimotios (sp). It's next to the fire station.
For some great seafood I would go to Poor Boy's or Gaylins. Gaylins has the best Prime Rib in town.
Geddys has some great burgers and good fish sandwiches. (Please don't pronounce it with a G, it's sounds like a J)
If you want good beer and good food go to The Lompac.
You can have plenty of local brews and play bocce ball on the back patio. Lots of local folks haging around.
The Thirsty Whale is a landmark bar in town and has great fish sandwiches.
If you have time and weather permitting I would go on the whale watch boat, it's worth it. I'm Buddys with the naturalist on board named Zack. He is full of more information that you can stand to listen too.
I would also try and go for a sunset cruise on the Margret Todd Sailboat. It's cheap and you can take a bottle of wine and cruise through the harbor for a nice sunset. It's one of the only three masted schooners still on operation.
I have plenty of other information, but that should keep oyu busy for a while.
Have a nice time, you picked a great time to go.
---