Mineralogy was my downfall in geology - after struggling and flailing and only managing a C, I fled to the liberal arts and dead languages - and eventually maritime history. But in such a fascinating setting, you must get to use your geological know how quite a bit!

Once we know when we're going (May or August), I'll let you know! My mom sounds like she wants to stay strictly on Oahu, and though I'd love to get to Kauai most of all, I won't complain. But the Lynx sounds wonderful - so sorry you got sea sick!