What to charge a cruise ship

[Ephemerum@aol.com]

I service a ship with seven pianos one afternoon a week.  They want me to go 
along for a cruise so I can rebush all the keys, along with some other 
repairs that take more than an afternoon's time.  I'll get on in my port of 
Key West, and either disembark in their home port in Texas (in which case 
they fly us home), or stay on the ship until it's back in KW.

I know I can bring my husband along at no charge, but I don't know what the 
industry standard rate is for this kind of work.  Do I charge my normal rate 
or more?

Anyone know the drill?

Karin Schmitt-Read
formerly of the NYC chapter