A picture slideshow is cheap and easy to make and always goes over well at an anniversary party. Windows XP & Vista have software that come with them that will do it, if you have a DVD burner, all you need is a blank dvd and you are set. If you know anyone who might own a projector and a laptop, you could borrow that (this is what we've done in the past), otherwise, just throw it up on whatever TV seems to make the most sense.
I recommend you think up what you want, divvy up the stuff that would be significantly easier to buy at the store and give those things to your sister who would rather go that route, the rest divy amongst the workers.
I would just do appetizers. A lot of hearty ones, but I wouldn't go nuts on a sit down dinner or buffet for that many people. It also makes the whole seating arrangement easier if you don't need a place for everyone to sit at once.
Personally throwing a party BYOB for a 40th anniversary seems very tacky to me. If your budget doesn't fit beer & wine, then don't serve it. Having a BBQ byob or potluck with a few good friends is one thing, having a 40th anniversary with 70 people BYOB is in my mind tacky.
I would just pick out a few beverages, and get them by the case at BJs, etc (if you are serving beer, wine). See what you can fit into your budget. If you have a local liquor store, you could ask them if its possible to return unopened bottles. We have done that for a lot of big parties, but the owner of the liquor store is my dad's good friend, I don't know if a typical one would do that.
I recommend you think up what you want, divvy up the stuff that would be significantly easier to buy at the store and give those things to your sister who would rather go that route, the rest divy amongst the workers.
I would just do appetizers. A lot of hearty ones, but I wouldn't go nuts on a sit down dinner or buffet for that many people. It also makes the whole seating arrangement easier if you don't need a place for everyone to sit at once.
Personally throwing a party BYOB for a 40th anniversary seems very tacky to me. If your budget doesn't fit beer & wine, then don't serve it. Having a BBQ byob or potluck with a few good friends is one thing, having a 40th anniversary with 70 people BYOB is in my mind tacky.
I would just pick out a few beverages, and get them by the case at BJs, etc (if you are serving beer, wine). See what you can fit into your budget. If you have a local liquor store, you could ask them if its possible to return unopened bottles. We have done that for a lot of big parties, but the owner of the liquor store is my dad's good friend, I don't know if a typical one would do that.