My family is very small but my fiance comes from very large Irish and Italian families. There are about 30 aunts and uncles (this includes spouses) and over 40 cousins. Most of the cousins are his age and they are all very close. I would love to invite all of them as I couldn't not include any of them and be comfortable or happy with it.
We estimated with his family, my family, and friends...to be about 250 people.
TIPS on keeping costs down? Banquet vs restaurant? Anything! I just started doing this and it is all so overwhelming and I figure there are many out there that have gone through my same dilemma

Also, how much should I expect it to cost per head at a reception? I know it varies but I am praying I can do it for under 40 with alcohol. Is that even possible?