If you talk to some of the dive ops, they can explain there disinfection procedures. I know some add disinfectant to rinse tank, don't handle wetsuits (nasty washing wetsuits together anyway) and have you take your regulator for you to wash.
Again I would keep my wetsuit, mask and regulator and they can rinse the rest in there wash tank with disinfectant.
Also, you can wade out to the boat on the beach if there is no dock. They will get the boat close to shore, put on your wetsuit (your gonna get wet anyway) and walk to the boat in waist high water.