Personally I couldn't do it. I tried, but ended up taking DD with us on a trip to New York over Valentines. Just couldn't bear to leave her. He ticket ended up costing more than ours too as it was a last ,onute decision.
She came on our honeymoon as well!
Have you left baby before? Only ask becuase I did leave DD for a weekend when we went to Amsterdam and I cried for her the whole time(and it wasn't due to the substances ;) )
(btw, I wasn't abput when the other thread you referred to was going on, but fwiw I didn't have children apart from immediate families children at my wedding - from what I gathered the guests who came wanted a good day out getting pished without the children around)