Do you need reservations for Raku late night?
I've been to Raku before during normal business hours, and had made reservations those times. This time, we're thinking about trying to go once post-11pm - do you need a reservation for late night dining at Raku on the weekends, or can you just walk in after normal dining hours end?
I've only been to Raku late post-11 once, and it was quite crowded So don't assume it will be empty (Raku is quite popular with chefs and other restaurant folks post-shift). So I don't see how reservations could hurt; alternatively, you could give them a call before you leave to make sure it isn't a zoo.
I think it may depend on how many people are with you since you can sometimes sit at the bar and eat. I would actually recommend calling to see if there is availability. This place is a gem.