Yes, you can, but the wait usually isn't too bad.
They are usually pretty busy when I go there. We made reservations for 13 once. It worked out pretty well.
I'm not sure, we didn't have you wait when we went.
When we went we gave our name and waited a little bit to get our table. It isn't a restaurant that requires a reservation, they might be able to put your name down if your on your way to not wait as much when you get there.
Thanks! Your answer is awaiting moderation.