Okay, here's what I know. bluezoo has three private dining rooms. Essentially, they're one room with removable walls in between. Each of the small rooms holds a strict maximum of 18 people, so you would need to rent all three to accommodate 40. The minimum spend per room is $1,200, so it would be a minimum of $3,600 for all three rooms. So that works out to $90 per head for your group, plus tax and grat. The automatic gratuity at Swan/Dolphin restaurants is 23%, so a little higher than the Disney properties. BUT, since the restaurant is closed at lunch, you would be able to skirt the private dining room issue and have your lunch in the main dining room. I have no idea what the minimum is for that. Honestly, I would look at Shula's, which is also closed to the public for lunch and makes an outstanding steak. You definitely get the dark wood look you like in there, as long as you don't mind giant black and white sports photos in gold leaf frames.