They’ll let ya stay, just stop serving out new food at around 9. Also, if you go earlier, you can get some of the cooked-served-gone til next cook foods like beijing duck, foie gras, and one other thing near the BBQ rack.
Going earlier also usually nets you a better table, sometimes they end up crammin’ people in the back which is inconvenient for beer/sake runs on weekends especially.. I wonder if they’d let ya just grab a keg instead of glass by glass ?!