Set a budget!
Make it a realistic budget!
Look thru wedding books/magazines and have your daughter pick out what she is liking. Get quotes from different places. My oldest had her first wedding in CT, back in 2001. That cost us $9000. That was with the "princess" dress with the EXPENSIVE crystals on it. We just happened to get it for 1/3 of the price. We were at the right place at the right time. For her dinner, she wanted roast beef, but the chicken tasted just as good and since WE paid for it,,,,the guests were getting what WE wanted. If they wanted beef, there are restaurants down the street. lol
When you find the place you want for your reception, if it's a hall/hotel/restaurant....ask if you can do some of the decorations instead of them using theirs. Some places CHARGE for the decorations.
We did marry my oldest off AGAIN just 2 years ago. This time in Hawaii. MUCH more expensive. Well, they paid for the church. They got married at Hilton Hawaiian Village's chapel, which was almost $5000 for th 90 minutes you get to spend there. We paid for the rest. Total bill for that was just under $4000 and that included sit down dinner (fish & chicken) for 100. We did our own centerpieces too.
My best suggestion would be to go to Knot.com and check out what they offer for suggestions. There is tons of great advice there.
One thing to remember....it's HER day, not yours. She may become a Bridezilla, but if she does, just walk away for a bit. She'll calm down when she realizes what she's doing.
And most of all........HAVE FUN!
Congrats!!!!