Just reading this thread. I am one of those that spends the extra to be able to:
Order from Dining Room Menu for Lunch and Dinner (the menu of the day)
I love the Spa Terrace. Have not been on Vista yet (this Nov) but on Riviera I love the big pool with cascading water and jets. From looking at Vista it looks great with beautiful seating, the pool, hot tubs, loungers. Can't wait!
As for Concierge lounge, unless you like to read newspapers, not much there (have never seen a concierge). They do have some of O's "famous" cookies, coffee. soda but otherwise I do not go there.
Have used the free bags of laundry, most times comes back before the 3 days, but unpressed.
Priority embarkation, sometimes doesn't matter.
Oceania bag, very nice one now
Change the Champagne for wine if you wish.
Earlier booking at specialties, yes even Guaranteed. You might even get a better category if they cannot honor your Guaranty.
And I actually used the cashmere throw. At first I thought mine to keep.
Everybody has their own opinion and mine is I think it is worth it now where it really wasn't years ago.