Yes you have to reserve. If you have early or late dining, you can't make reservations until after 7:30 I think. If you have anytime dining you can eat earlier.
When we enter our cabin i turn the dial to coldest setting. In a few hours it is pretty darn cold. I then adjust the setting to a little warmer and am satisfied.
Does your favorite restaurant at home change their menu every year. If you went there seven days in a row , three times a year, you would be bored with the menu also.