Usually late afternoon on any weekday (except Monday, they're closed). Between the lunch rush and before people get out of work. So around 4pm. It would be 45 minutes to an hour which may seem long but considering the wait can be 2-3 hours normally, that's not bad at all.
Definitely after the lunch rush during the weekdays, where wait times are usually 45 to an hour. Good luck on the weekends!
Follow them on Twitter. They do update the waiting times.
I agree with Justin! That's a good time estimate. It's still well worth it too!
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