The breakfast break on M&S class ships is from 8 to 10 AM in the Tucson Grille. Light breakfast, continental style. Also you get complimentary bloody marys, mimosas and bellinis.
Before the shut down the CC HH was nice. Drinks and snacks in the Sky Lounge (M&S class ships) from 5 to 7PM. What I've read here on CC is the CC HH is still happening from 5 to 7 at most bars but no longer an organize event in the Sky Lounge and no pre dinner snacks.