I am sure this is different with each ship, but I had a lot of trouble staying connected on the Holiday. I would be in the middle of somthing and poof my connection was lost. On the positive side, I got a 5 min refund each time it happened.
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Celebration Nov. 2007
Holiday Feb. 2008
Fasination Mar. 2009
Holiday May 2009
Fantasy Feb. 2010
I took the liberty of fixing your tickers. They had some extra lines of junk in them but look correct now.
The Holiday does have less-than-stellar wireless, but given her age it is understandable I guess. On the other hand, the newer ships have solid signals in most places.