Newbie here as well...
My Mom and her hubby are avid cruisers (over 15 cruises on RC alone)...they NEVER book excursions thru RC...she said anything that RC has on their site, you can take a cab to the place and do it for a fraction of the price. They've had some bad experiences early on in their cruising (broken down buses, no working A/C, long lines with a 'group'...).
We leave in two weeks, there's very few 'excursions' I care to go on, I do want to spend the day at Atlantis in Nassau...I still need to call to find out whether they offer day passes as I've heard conflicting reports that they've not stopped offering it.
HOWEVER, I did notice a Breezes day excursion on RC, pulled up Breezes website and called them directly....
RC Cost for 4 hours: $90.00 per person
Cab to Breezes and pay at the desk on our own and the pass is from 10 a.m. to 6:00 p.m. $60 per person...so, if Atlantis doesn't work out (still need to call them direct), we'll be at Breezes on our own ride, not thru RC.
Also, my RC rep that we did our booking thru had the same advice regarding cabs. She said a lot of times you can give a cab driver $30 or $40 and they'll take you to secluded beaches, etc or anywhere you care to go for the entire time you're in port...just to ask the driver a lot of questions. We've got six people in our group tho, so I don't know that this would work for us, but we'll see.
I know my folks also do this a lot.
So, just my two cents and what I found out from calling Breezes in Nassau myself