They're starting to bring back some onboard extras that they had stopped offering due to COVID.
Old article about the Sip.Tour.Brunch: https://www.royalcaribbeanblog.com/2019/12/19/spotted-sip-tour-brunch-galley-tour
Basically this is a meal and a behind the scenes galley tour.
The sushi making class has also shown back up for my upcoming Oasis cruise.