Let me start out by saying: We Like RCCL and have booked another with them while on board. We have sailed 25+plus times on CCL and one Disney and one HOLLAND. Holland too old for us. Disney was with a 9 year old and had a blast. CCL is a go to for a family and a nice get away. RCCL is our GOTO and will be for awhile, great dancing and music and food is always a plus.
Oasis: we knew going in that it was a large ship, sailed on her previously. We bought the KEY: fast on and a nice lunch and fast off the ship, everything else..Mehhhh. We got the Voom internet with it and that kept us connected BUT the royal app and the key dont jive and the booking of shows on a ship with 6000 folks is problematic at best.
We attempted to book shows with another couple we traveled with who also had the key and it never synced. The APP is touted as aplus but was a big bottleneck and even the pursers desk couldn't work the issues out. RCCL: More inside training on the app so it can be used by your crew better.