The honeymoon fund used to feel like a slightly awkward ask, and then a whole generation moved in together before getting married and the toaster problem solved itself. Now a honeymoon fund is one of the most common things on a wedding registry.
It's normal. The wording is the only thing that still matters, and it's mostly about not sounding like an invoice.
Why it's completely fine
Most couples marrying today already live together, which means the traditional wedding list of kettles and crockery is answering a question nobody asked. Guests know this, and most would rather give something the couple will actually use, a honeymoon they'll remember, than a fourth set of towels.
Asking for contributions to that is not grabby. It's giving guests a useful answer to a question they were already going to ask.
Wording for the website and registry
Keep it short, warm, and specific about what the money becomes: 'The best gift you could give us is a contribution towards our honeymoon. We've been together a while, so what we'd really treasure is a trip to remember, not another set of plates.'
Then itemise a few things so it feels concrete rather than like a request for cash: a dinner in Lisbon, a day trip, a night in the hotel with the view. People give more happily to a specific thing than to a number.
Wording for the invitation
On the details card, one line is enough: 'Your presence is the only present we need, but if you'd like to give something, a contribution to our honeymoon would mean the world.' Then point to the website.
That first clause matters. It tells guests they're wanted, not billed, and it's the difference between a fund and a cover charge.
One pot or itemised?
Itemising wins. 'Flights', 'a hot air balloon ride', 'dinner at the place we read about' gives people something to picture, and a guest who gives £50 towards a specific dinner feels more generous than one who gives £50 towards an unspecified trip. It also makes the thank-you notes easier to write later.