You should hang your head in shame - Greece?? I'm JEALOUS!
See, I don't think it's the cost thing in this thread - just what the money is usually spent on with weddings that cost heaps I, too, think that kind of money is best spent on a bloody good holiday and an occasion that lasts for longer than a few hours!
I've been looking into an offshore wedding, too - but for far less than 30 heads, mind you...still want that farm!
Back to OT, really, a committment ceremony is not about a 'big day' - it's about sharing a moment and celebrating it in a non-traditional way...so break with the tradition of paying for everyone, by all means