I'm not a fan of the asking for money, but given that my wedding nearly 9 years ago was the last wedding that I've been to that hasn't asked for money I'm kind of used to it by now.

In terms of wording I actually would prefer people come straight out and ask, instead of dressing it up in a poem and trying to make it sound all cute and novel. Something like:

We already have a household fully of lovely things so we are asking for wishing well contributions towards our honeymoon later in the year. Of course we will love and be grateful for any gifts received.