We take all our own. I would suggest you go to a dive shop and find at least a mask and snorkle. You never know really just how clean they do get the snorkles and you really want a mask to fit your face properly. Too tight and you get bad face squeeze and headache, too loose and no matter how much you pull on the strap water gets in.
I've bought the extra large ziplock bags to put ours in, has handle so easy to carry and it keeps any left over sand off our clothes in the suitcase.
Star Princess 2005, Sun Princess 2005
Caribbean Princess 2006, MSC Lirica 2006 , NCL Pearl 2007, Majesty of the Seas 2008, Carnival Destiny 2008, MSC Lirica 2009, Carnival Valor 2009,Carnival Legend 2010, Carnival Liberty 2010,Carnival Fantsay 2011,Carnival Valor Feb 2012, MSC Poesia Dec 2012, MSC Poesia April 2013, Carnival Legend Nov 2013, MSC DIVINA Jan 2014