One of the keys to an enjoyable cruise is to correctly set your expectations. I'm in agreement with with ScottC. The food will rate favorably with a decent hotel banquet back on land. Don't expect the chef to lovingly prepare your entree as if he were eating it himself. He and his staff are feeding a couple thousand folks all at once. Do not expect embarkation and debarkation to be hassle free - this is still travel - it should not be as unpleasant as air travel often is but issues can arise. We were delayed for a couple hours this summer when an ill or injured person was evacuated. I have had to stand in line at the Pursers desk for an hour to get keys remade and we once discovered we had not been assigned a table in the dining room when we got there for dinner. These small things could ruin a cruise for some (we've all read those sort of posts here) and some people know how to roll with the flow. Best of luck with the bridge or engine room tour. My FIL was hoping for one on his first cruise last month, but was too shy to inquire. We somewhat satisfied his techie side by walking around the ship while it was docked in Nassau and finding a great vantage point when the ship pulled out of the harbour. He also plans to bring a scanner and a gps on his next cruise.

The real key to enjoyiing life is flexibility and openness. By all means skip the line dancing if you're not comfortable with being on stage. I would never engage in karaoke myself so I do understand. But, look in on activities if you're at all unsure. I'm glad someone talked me into the Bingo - I didn't win the big $$, but I did win an art print that was worth way more than the price of the Bingo cards.