Don't go with an occasion expecting very much or you may be underwhelmed. Room upgrades, room decorations, and small freebies are anywhere from nonexistent to the exception, in our experience. You can expect (and ask for if not offered) a button to pin on your shirt. SOme CM's will notice and then acknowledge your occasion with best wishes.
My 30th birthday - a button and birthday wishes by some CM's.
My DD's 10th birthday - button and birthday wishes by some CM's
DD honeymoon - buttons, verbal acknowledgements, a free cupcake each.
DS honeymoon - buttons, verbal acknowledgements, nice table to watch Illuminations at R&C (upon request, may not have been related to the honeymoon)
45th wedding anniversary trip - a button at the GF RPC, candy and balloons in the room at BWI CL.
other anniversaries - nothing at all.
many occasions through the years - nothing or buttons with occasional verbal acknowledgements by CM's.
Years ago, I used to hope for 'grand' pixie dust, but it just doesn't usually happen. I was very impressed with finding 3 chocolates and 2 balloons in our room at the BWI. The best pixie dust we ever were given! Not surprising that it was from the BWI CL CM's. They are awesome!
We don't expect anything, anymore. Lately, when asked if we are celebrating anything I just say No, even if there is an occasion. Somehow, I avoid disappointment that way. We make our own pixie dust (by planning and paying) for our celebrations.