Cruise to tankers

Qualified ETO with a background in cruise with some experience in industrial electricals, large fixed installations and cable handling equipment. I've had, and accepted an offer to work with a small fleet of tankers.

Is there anything particularly that would be a bit of a shock to the system in terms of working practices? I understand the crew sizes will drop dramatically, but this is inconsequential as I am not so social anyway. Is there anything you'd pack for a tanker/cargo vessel that you would ignore for cruise, or vice versa?

In terms of experience, I'm used to the large distribution systems of the cruise ship, HV stepping down as needed for various consumers, with electrical propulsion.

I think the biggest turn for me will be working with shaft gennies, and the relative lack of automation for everything. What should I expect?