For Platinum, the canapes we've received have ranged from chips & dip (occasionally) to crab claws, crab legs, shrimp, pate etc. They're delivered around 5 pm - just after trivia and/or bingo. Something to nibble on while getting ready for dinner. It's the same that butler suites get, but delivered by a stewardess. Cavier is reserved for the SSS cocktail party. The laundry perk is really nice because you can pack less but don't have to get up before dawn to get a washing machine.
For Titanium, depending on where you live, the transfer between home & airport can be worth $ 50.00 to $75.00 or more each way. Between ship & airport is worth $30.00 to $60.00.
Englebert, the Hotel Mgr just leaving the Mariner, feels more needs to be done on board for repeat guests and he seems to have Corporate listening to him - we can only hope they act for us.