Theoretically the brides parents pay for the wedding and the grooms, for the party the night before, after the rehersal (the rehersal dinner with all the out of town guests and family).

I would wait and see what the young people come ask for? I don't know how they're planning to have the wedding or where/how much it should cost, etc. Usually the bride's mother and bride do most of the planning based on what the bride and her parents can afford? It's nice she wants a big wedding but if no one can afford that. . .

I helped finance a friend's daughter's wedding (they already owed us money so we added to it) and that daughter's wedding (4-5ish years ago?) was probably only 1/4-1/3rd what my own cost in 1989.

When I was married (my parents paying even though I was 39) my father-in-law I think gave us $500 or something, wanted us to buy a microwave oven (which I didn't particularly want :-) but my husband and I paid for the rehearsal dinner which was something like $1500-$2000 if I recall. I planned it.

But I guess it depends on what you can afford/want to give! In some areas I was very lucky; my wedding dress was only $120 and French silk (which my stepmother had to alter to fit me right) and the bridesmaid dresses were off the rack and only $65 I think apiece at a department store and I know a couple of my bridesmaids still wear them. It's fine to want a "fancy" wedding but there are some things that don't have to cost that much.