they should be quite good if you call in and ask. my husband and I were in a similar situation a month ago, on a Saturday night at around 6:30 or 7 pm. The owner said if we got there within 15-20 minutes we'd have a table and we did. It was actually quite mellow once we arrived. And the clams in a super delicate miso broth were sublime.
good luck!
bjt
"eating is an agricultural act" wendell berry