Yes, we tip the curbside porters at the port.
On our last cruise we got out of the rental car shuttle and tipped the driver for his service and for managing the bags. We turned around and a porter took the bags and we tipped him as well. Two tips in less than two minutes. But that's how tipping goes sometimes; I was taught that anyone who touches my bag as part of their position deserves to be tipped.
We tip them, but I hope for the right reason. Not because it is expected, not because they might depend on it for their income. In every single cruise where we drive up and drop off our luggage, the porters (longshoremen employees of Ambassador Services Inc who has a contract with DCL by the way), we've been greeted with a smile, friendly banter, open doors, no hurry or pressure. They remind us about such things as making sure we have our passports (not leaving them in the checked luggage) and meds, tell us how the system works, check the tags, tell us when to expect the bags, etc.
They have provided me with a great service - what could be easier than just driving up, your bags are taken away by someone, how easy. In the US this is a traditional tipped position, and we're happy to do so.
Not the OP's question, but if I may add a bit more. At the end of the cruise, if you get help taking your luggage back to your car, you'll be spending some time with them. I always advise talking to Disney CMs on the ship, no matter their job, and the save advice applies to these folks. They all are great conversationalists, and everyone has a story. We've run into veterans, Disney retirees, and grandparents. It's fun.
Also I would bet that the porter could have broken the 50.00 with out a problem.
duplicateAgain I'm honestly not advocating not tipping b/c clearly we all want our bags to get on board safely... No offense but it's not always Crazy Hot, and not sure if it's working their butts off to take bags from the curb to behind the fence...
i carry my own bags after one time I forgot and they said where's my tip - I said get another job.
Just back from the Fantasy and had excellent porters at embarkation and disembarkation. I had 5 bags (2 large, 2 med, and 1 small) and gave $20 at embarkation. He unloaded all of our luggage carefully and gave us lots of information about lines, parking, and our return, and didn't rush us at all.
Found a nice guy at the bottom of the escalators during disembarkation who found all of our luggage (which was in 2 sections since the room steward gave us the wrong colored tags), found us the fastest line, walked us to our car, and even helped me load the luggage in a better orientation so I could see better out the rear view mirror. I gave him $35.
The last person said they work for a private company contracted to Disney - so they are not Disney employees.
Great experience overall and worth the tips in my opinion - but I am usually a heavy tipper when I feel people do a good job and are nice all the while.
Thanks for sharing. What tips did he give you when you got there about lines?