Well one thing you wil want to do is order the romance package for them. It is $79 and worth every penny. As for what they will do, most cruiselines don't do much anymore, maybe a cake one night. I would suggest you email the ship coordinator and ask for suggestions. you just send it to; email@example.com
and congratuations to your parents, we are celebrating ours in May as well, but we decided on doing a renewal of our wedding vows in Laughlin, NV, it was a hard decision. We still have many of our friends living in So Calif and figured we stood a better chance of getting them to attend if we choose someplace close for them.