I believe the benefit is for the person whose name the room is in....and one other person. So even if all 4 of you are staying in the same room, I'm pretty sure you'll get 2 breakfasts, regardless of anyone's status.

The only experience I had was this was at another Hilton resort, the Pointe Squaw Peak in Phoenix. We had a 2 BR Villa for 6 of us...Husband Diamond and me in one room, 2 grandkids and their parents in the other. We got 2 vouchers a day for breakfast. Period. But what they did was hand us the vouchers for the 3 days, so we had 6...we used them all at the same time the very first morning so we all got free, then nothing after that. Which was fine because everyone was coming and going at different times so I think we went and got some breakfast food and snacks which we kept in the villa kitchen. And just paid for breakfast for those who chose to do that.

I don't know if all the rooms at the Bentley have kitchens, but our suite did, so you might want to consider that.

There's also the possibility they are generous and let all of you eat every day. You'll find that out when you check in and ask.