First off, congratulations!
My friends got guests to pay for the honeymoon And they categorised what each gift would be - we bought them drinks in the moonlight and a spa treat.
That's a great idea, a friend recently got married and just asked for contributions to the honeymoon, which, while obviously useful, made it a bit impersonal. In the end we asked if we could give them something else instead, as they had given us some much used gifts, that we remember them by each time we use them ...
Our own wedding was quite a bargain in the end - we were both over 35 at the time (not saying by how much

), Mr T had just finished a degree as a mature student, so we didn't have lots of spare cash. As has been said by somebody else, we didn't see the point of spending many thousands of pounds on a single day rather than a bit more long term, but still had a close family celebration (registry, 20 people) near my parents, and a small ceremony at a loch side followed by a big party (family again & friends, 70-80) with a ceilidh in Scotland.
We had some amazing friends organising the local village hall, the band & hot buffet catering (they are professionals), with us preparing salads, providing lots of soft drinks, friends bringing cakes, wild flowers picked locally, candles & napkins on the tables, glass rental locally ... both sets of parents insisted in contributing, so one set brought a car boot full of champagne & very nice wines to the party - we still have one left-over bottle

), and friends/family helped decorate the village hall and sweep it the next morning.
It was quite informal, but at the same still felt like a proper wedding.
I have worn my non-white-meringue

dress a couple of times since, and Mr T's kilt is in regular use, too...
Mr T wanted a white wedding

... that's a wedding in the snow rather than the meringue

, which we managed, followed by a week's ski holiday in a little pension in the Alps (who gave us a special honeymoon price when we mentioned the occasion, without any prompting on our side

).
My dad is an excellent photographer, he did some semi-professional photos, and we got quite a few guests' collections which was great. And Mr T's mum & aunt made the most beautiful wedding cake ...
So if the future Mrs M and her friends are very artsy, there is plenty of scope to get their talents put to good use!
T