My wife and I have stayed in the Tower Club twice.
The view is fantastic no matter which side of the building you're on.
The Tower Club perks are'nt all that great but they will save you money if you take advantage of them.
They put out a great breakfast spread every morning between 6 and 9AM. There's coffee, milk, and orange juice to drink, Fresh fruit, toast, all kinds of donuts, cereal, and every thing else you need for breakfast except meat and eggs. We ate there every morning except one and didn't have to spend a dime for breakfast.
There are also snacks put out in the afternoon but we usually missed out on them becasue we were in the parks.
There's a turn down service with a little Mickey chocolate put on your pillows. I saved all mine and brought them home for gifts when we got home.
As far as tipping conceirge I always tipped a $5.00 minimum adding more if the favor was more difficult. I've heard stories of people who tipped $10 or $20 to the conceirge because he or she got them into Cinderella's Castle for a meal.
If you have anymore questions about the Tower Club feel free to PM as I may have left some things out. :hammer:
Enjoy your stay!