Thank you so much!No reservations needed for breakfast, they only take reservations for dinner. I don't know for sure as I generally only stay at the Dolphin but I believe you can use your Swan breakfast benefit at Rosa's. If it's the same as the Platinum Elite benefit, you get 2 continental buffets for free, or if you are solo, you can get the full buffet for free. If you want to order off the menu instead, it's $15 per person for 2 of you or $30 for solo guests.