I have the 28BHBE with U shaped dinette. If two of the people you're trying to seat are either small or children, no problem. But there's no way DW or I fit in the back of that dinette.
One of the main problems is that the table is too short vertically. The table basically sits on the top of your thighs, and it's also pretty tight front to back too, but we're big people, so that doesn't help.
Don't forget in the BHBE, you can take the storage ottoman out and use it like a bench seat on the other side of the table. 4 people can fit pretty easy that way, though it might be a little cozy on that ottoman... Depends on preference. All that being said, I think we've had 6 people in that dinette before, at least 3 were small children...IIRC?
2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)
Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!