Well, actually, even with a reservation, you still might have to wait: this has happened to me a couple of times. Monday night is a great deal because it's $10 per person for all-you-can-eat tapas. The list is pre-set, but has enough variety to keep everyone interested (and you can get as many refills of whatever dishes you especially liked). If you do go on a Monday, though, definitely try to show up early, early, or late, late, because it is crowded. The bartender was friendly, too. All in all, I agree with the previous poster: definitely try it out. You won't break the bank doing so!
Pros: fun atmosphere, great, great food, great deal on Monday nights
Cons: long waits at times, crowded
more