Hi,
I got married last year and we set up an account with a company called VIPvillas.com, they do a honeymoon payment plan, they sent us some business cards to put in with our invitations with all the details on and instead of presents people paid towards our honeymoon, it was amazing we did things we could never have afforded!!
It was really easy we just set up the account and everyone else paid in... and you don't have to book your holiday with them if you don't want to so you're not tied, they will just send you a cheque for the amount in your account...
And not only that when we got back from our honeymoon we we met with a lovely wedding card with all the messages our guests had left online for us, so we have them to keep forever.... fantastic
Here is a link if you're interested
http://vipvillas.com/honeymoon-guest-payment-plan/Hope this helps some of you
Lisa