It's really a hit or miss there. Sometimes they are packed sometimes it is empty. I would book one just to be safe but most likely you won't need one unless it's a big party.
I didn't when I went with a party of 4 at 6pm on a friday. But it did fill up after we got there.
It depends on the day and hour you want to go. From 7 to 9 there would be probably lots of people, and you may need to wait.
It's a good idea
It really depends on whether you are trying to go during the end of day ski rush or if it's a busy weekend because of an event at Killington. Also, if you have a group larger than 4 people it's smart to get a reservation. There isn't a lot of waiting room inside other than at the bar so I would at least call ahead.
We didn't when we went. They have really awesome food.
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