I'm not super computer literate, SO I really liked cruise-ship.com's layout. Once you put in your ship, date, days, and ports, it added them all up, told you how many cruise lines, ship and ports, you've been on, how many days all together, etc. I could probably do an excel spreadsheet, but it would take me days to get it right! I was hoping for something easier, and relatively simple, not needing costs, airports, and other details.