We booked the Carnival Triumph for this past October at a 6A guaranteed OceanView we were upgraded to a 6E on the spa deck. Went from a picture window to one full wall of window.
Everytime we have booked guarantee we have been upgraded. When we booked on Fantasy a couple of years ago, again 6A guar. upgraded to 6D midship.
Last year last minute we booked HAL Zuiderdam guaranteed lowest catagory inside, upgraded midship 4 decks higher. We have always gotten great upgrades.
By the way, don't know which Cruiseline you are thinking of booking on, but next Thursday March 9th, there is a 1 day only sale with Carnival book any catagory and get the highest available upgrade on the spot. Ask your travel agent about it. They will be able to preview the prices on Wednesday March 8th.
It won't hurt to ask, but you may have to cancel and have the TA rebook in order to get the sale; usually sales aren't retroactive. If you have booked a cabin guarantee, you have a chance of being upgraded, depending on how full the ship is when you sail. All a guarantee means is that you will get at least that category of cabin.
We went on a 4 day on carvinal Cruise and was upgraded from an oceanview room to a balcony suite. That was the nicest upgrade we ever had. We had a MBNA credit card and get Cruise points so we always book thur them.
We booked an inside guarantee on our upcoming April 19th Constellation cruise. We were delighted when our docs came and we were upgraded to an outside in a great location. I also booked an inside guarantee on our May cruise on the Zenith....we got a not-so-good location, still inside. So.........you never know.
Feb 2006 5 nite Celebrity Zenith
April 2006 9 nite Constellation
May 2006 Zenith to Bermuda
June 2006 Carnival Legend 8 nite
Sept 25,2006 Carnival Legend
Oct 29,2006 NCL Spirit (11 nite)
Feb 4, 2007 Carnival Legend
May14-25th,2007 3 B2B on Carnival Fascination
Sept 24,2007 Carnival Miracle
Nov 7,2007 Carnival Miracle
Jan 14 Fascination
Jan 18 Miracle
Feb 25 Fascination
April 21 B2B Imagination
Sept 7,'08 Legend
I think most cruise lines have that policy. The exceptions occur when the cruise is far from sold out, and I suspect (at least with Princess, which was my experience) that the earlier you book, the higher on the list you are for upgrade possibilities.
Well, I took a cruise in April of 2005 on Carnival and booked an inside gurantee room, hoping for that possible upgrade too. However, we did book ath the last minute and so the ship was "sold out", (or so we were told). and so we didn't get an upgrade at all. But I was advised to at least ask when checking in... never hurts to ask... But if they say no, at least try to get a little ways from the elevators, cause for us, it was a little noisy around them.
And if you don't, don't stress over it too much... we didn't do anything but sleep and shower in there anyhow, and the inside room was nice and dark for good sleep!