Take your printed set sail pass from the online check-in, your passports/drivers licenses and the credit card you used for the online check-in. That's all you need at the pier. As mentioned the porters will have extra tags - put your name and cabin # on tags and tip the porter maybe $1 or $2 per bag. ENJOY!
Most cruise lines have changed to e-doc. You or your agent should have received doc as email. Call TA or RCI and ask them to email your doc. There's no need to print them out (it could be 10-12 pages long), but you might pick up some information that you didn't know by reading them.