I've tried, you cannot be added to the wait throughout the phone, it's first come first served.. But if they are on a wait then go to the website and it will allow you to add your name to the wait list.
Yes, you can make reservations. I never had to wait over five minutes to be seated and I've been to several in different cities.
If you go online you can add your self on the list it'll yell you how long your wait is.
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