do they combine small groups with larger ones?

They do for Hibachi (like most hibachi places do). There is private seating available (without the hibachi tables) if that's what you'd prefer.

Yes and no. For Hibachi they seat , I believe, 10 per table. However the traditional dining is as it states, like any traditional restaurant, you sit at a table with your party. However traditional dining does not come with the show that Hibachi provides . You may also sit at the bar or the sushi bar. So many choices, depending on thw experience you are looking for

I love this place, never had I not had a exellent meal but staff is also wonderful and attentive

Yes, but you can request to be seated differently

Yes