Yes it all fits, and I'm leaving my computer at home. I have a Lowepro Computrekker AW (backpack). It is made to hold 2 camera bodies, and several lenses, batteries, flashes and all the camera gadgets, along with a 17" laptop. When it is loaded, it is heavy. I only have 1 camera body and 2 lenses. So the rest of my "stuff" fits nicely.
It is a 10 night round trip from Ft. Lauderdale. We are stopping in Orangestad, Aruba; Cartegena, Columbia; Limon, Costa Rica; Colon (Cristobal), Panama after going in and out of the Gatun Locks; and Ocho Rios, Jamaica. We leave for the airport at 4am on the 6th. should be on the ship by 2pm.
I hear a song here...."If we weren't all crazy, we would go insane". Maybe that should be our theme song, "Changes in Latitude, Changes in Attitude"....We are all a little crazy, I think!!
I am on my 3rd one just for transporting my stuff. Then I take a small bag to carry my camera around in.