Hi Heather,
Sorry, haven't done any of those excerstions, but as soon as you get your docs, they should explain them all, you can also check on the cruiseline's web-sites for more info on those tours. What ship are you cruising on?
You also may want to read throught the section here for first time cruisers, some great tips:

<http://www.cruisemates.com/articles/cruiseguide/first-time/index.cfm>
Donna
Tuesday Chat Host