here's what i'm doing. i'm getting married on a beach in Maui. i'm going in February which is right in the middle of "whale watching season". instead of a reception after the ceremony i'm thinking of taking a dinner cruise. odds are really good we'll see whales and dolphins on the cruise. i might do the cruise through http://www.pacificwhale.org/
(thanks for the info jj1). the proceeds of their whalewatching tours go towards marine conservation.
would be far less tacky and way better for the animals in question, but travelling to and staying in Hawaii is pricey, believe me
also, on the note of wedding gift registries... i've also read that depending on how you booked your honeymoon, you can register so that guests can donate money towards your honeymoon instead of buying gifts.
i think it's a neat idea, but i wouldn't register solely with a charity or for the honeymoon, i'd register for some gifts as well, to give people the option of either pitching in money to your cause or trip, or buying you a gift. some people just prefer to give presents
i was considering giving the choice to chip in on our trip, but i think i'll do a charity instead, it seems more classy to me, plus we're ok for the money for the trip anyway. i just have to get hubby to agree on one of my preferred charities lol