Ditchdoc

Pack so you can carry off. You can be one of the first to leave the ship.
My wife an I each carry a sturdy roller bag for most of our belongings. A smaller bag with straps or handles that can loop over the roller bag handle and can be pulled as part of that and finally a over the shoulder carry on bag. Its a bit of a handful but manageable while giving you the space to carry about anything you might want.
This arrangement also will most likely get you through customs quickly and on your way to your next adventure.
If the ship unloads your bags, you have to wait for your time, go find your bag (which may still be in the off load process)  and still tote it all through customs.
Packing so you can carry it all yourself can save you quit a bit of time.

Simple process. Check in with guest services when you initially board to make sure you are 'flagged' as a B2B. They will take care of everything as far as keeping you informed about what you need to do
Some ships/ports, you get off and back on. Other times, you may no need to get off at all.
If you should book B2B with different cabins, you will have to pack but staff will move your bags to the new room. If you keep the same cabin, you do not have to do anything other than report to the location assigned for B2B's on port day.
On more thing. Those doing a B2B typically get a dedicated seating area in the MDR for lunch on port day so you do not have to contend with all the new folks getting lunch in Windjammer.

While I was working, some employees would disappear several times a day for a cigarette break.
I threatened to start taking a cigar break knowing it would take a good 30-45 minutes to smoke.

Don't think it will matter. Do not think I have ever had to show a drivers license as long as I had a passport for ID. Since your passport matches your reservation, I think you are good.

While I was working, some employees would disappear several times a day for a cigarette break.
I threatened to start taking a cigar break knowing it would take a good 30-45 minutes to smoke.

Just saved $1011 on a November Icon cruise.

Just saved $1011 on a November Icon cruise.

Just saved $1011 on a November Icon cruise.

Just saved $1011 on a November Icon cruise.

Just saved $1011 on a November Icon cruise.

Just saved $1011 on a November Icon cruise.

Just saved $1011 on a November Icon cruise.

I think it would nice if RC designed some modern smaller ships. I realize the profit margins may not be as good but I think the market would be there for 3 or 4 classy smaller ships.

I think it would nice if RC designed some modern smaller ships. I realize the profit margins may not be as good but I think the market would be there for 3 or 4 classy smaller ships.

I think it would nice if RC designed some modern smaller ships. I realize the profit margins may not be as good but I think the market would be there for 3 or 4 classy smaller ships.

I think it would nice if RC designed some modern smaller ships. I realize the profit margins may not be as good but I think the market would be there for 3 or 4 classy smaller ships.

I think it would nice if RC designed some modern smaller ships. I realize the profit margins may not be as good but I think the market would be there for 3 or 4 classy smaller ships.

I think it would nice if RC designed some modern smaller ships. I realize the profit margins may not be as good but I think the market would be there for 3 or 4 classy smaller ships.

A sturdy sole. Most tennis shoes will do.
Of course if you are serious about rock/wall climbing, there are specialized shoes to purchase starting at about $50 on up to $200 or more. 
If this is just a casual thing for the cruise, a good pair of tennis shoes will work.

Nice...not so long ago...you looked through all the printed photos on racks. Tech is moving faster all the time. Next....click 'photo' in the app and a drone shows up in seconds to take one.

Makes sense ... but maybe hard to enforce.
"Sorry Mam, but that duck is contraband."
"Sorry Mam, the line is slow today because we only have one duck sniffing dog."
"Sorry Mam, this area if off ducking limits."
"Sorry Mam, but you can not duck in here."
 
 
Sorry ... I will quit.
 
 
 

Makes sense ... but maybe hard to enforce.
"Sorry Mam, but that duck is contraband."
"Sorry Mam, the line is slow today because we only have one duck sniffing dog."
"Sorry Mam, this area if off ducking limits."
"Sorry Mam, but you can not duck in here."
 
 
Sorry ... I will quit.
 
 
 

Take something benign and fun and people will find a way to Duck it up.

Take something benign and fun and people will find a way to Duck it up.

Nice...not so long ago...you looked through all the printed photos on racks. Tech is moving faster all the time. Next....click 'photo' in the app and a drone shows up in seconds to take one.