Advice For a Green Horn to the GOM

I recently was hired on with a up and coming offshore services company based in la. I am an ab with no experiance in the gulf but with tons on the east coast mainly in vessels less than 500 gt. I also have a masters all be it a small one 100 ton near costal. I am looking for advice on how go about making a big impression as well as things not to do on my first few hitches. Any advice would be awesome from all of you old timers and seasalts out there.