dukepresley

Made this trip 2X; once w/D300S / 17-55f2.8,
Second D700 w/24-70 f/2.8...both lenses are Nikon. Great coverage w/sufficient reach (read cropping)

Nanarozzi Loc: Brentwood, TN & East TN

I agree. I just finished a Mediterranean Cruise and left my Canon 5DIV at home and took my Sony RX100 VI. Never regretted making that decision.

Hope you enjoy your trip!

zug55 Loc: Naivasha, Kenya, and Austin, Texas

The "rig" the OP is proposing is the Sony a7 III (1.43 lb / 650g) and the Sony 24-105 f/4 (1.46 lb / 663g). Total weight 2.89 lbs or 46 ounces. To me, this is a manageable travel package.

aubreybogle Loc: Albuquerque, NM

I can't get excited about bringing a pound or three weight or more difference in camera equipment on a cruise. I am a frequent cruiser. You come on board, unpack once, and move into your stateroom. Camera and lens selections are dependent on what you intend to photograph in the next port. No reason to lug everything you own, but don't unnecessarily short yourself on a particular shore excursion. You will probably regret the decision. Have a great trip and enjoy the magnificent photographic opportunities in the Baltics.

AJFRED Loc: Alabama

Something to think about: hire a private guide for your excursions. They are less expensive that the cruise line’s tours, and you will be in a smaller vehicle and generally have more time at any particular place. I have done it both ways, and think you would have no problem with your versatile heavier lens. In St Petersburg, look up SPB tours. A first rate organization, and fully licensed by the Russian government. Stockholm has an city-sponsored list of licensed guides you can choose from.
PS: the best burger I ever ate (and my 6 companions all agreed) was in Stockholm at Barrels.

Lagoonguy Loc: New Smyrna Beach, FL

Zug55 I understand the weight of his Sony basic rig and I’m happy that you find that weight to be manageable for you. Luckily, it is also still manageable for me but not in conjunction with a possible wide angle plus a fast prime and maybe a backup camera while traveling. The cruise ship makes it even more manageable than multiple hotel stays on land tours but you still have to tote it through airports and on land transport. My Panasonic G9 & PL 12-60mm f/2.8-4 weighs a mere 34.5 ounces. My point is that I believe from my experience that the 24-105 or 120 FX equivalent will usually take care of 90% of what I shoot, others will very likely differ. From my experience with cruise and land tours the FX lens combo is a little bulky when you are at lunch or dinner. The size of my FX gear as much as the weight of it attracted me to the M4/3 package for travel. I still have all of my FX & DX equipment and I enjoy using it but not so much for foreign travel. I think he would do just fine with his Sony & 24-105mm rig. Happy travels.