Okalie Dokalie everyone - I'm all caught up on reading; here goes the catch up on posts!
Lanyards/Buttons/Writst Bands:
Ryan and I have done a LOT of research on this, so there are several options we can choose from. Personally, I don't care what we end up doing, but I think having
something is a good idea. With that said, I think Sergio makes a very valid point - that a wrist band wouldn't have to be removed and put back on 40 dozen times. Ryan doesn't care, as far as he's concerned just do what-ever's cheapest and be done with it. For me, I wouldn't mind spending a little extra money on an idea I had, the problem would be that I don't think everyone else would want to spend $3 or $3.5 on them. That said, I think I would have chosen buttons, but with Sergio's point on the wrist bands I would have to go with them. Either way, below is approx pricing for what we've found. Remember, this can change depending on the number of people joining/participating in the purchase. A lot of these things are bulk, so if only 1/2 the group wants to purchase then we'd have to pay more per person and have extras. I'm also concerned because, although a handfull of us regularly participate in this board, a LOT of people have signed up with our group and then never been back to say word 1! How will we know if they are in, especially considering it's the majority of the cruisers??
Average button (with logo): $0.59 per button (for good quality), or we found someone who would do them 100 for $30 including shipping (ok quality, but not as many reviews as the one above)
Average lanyard: $1.15 - $1.60 depending on type (polyester/woven/tubular)
Wristbands: About $1.04
Now, the idea I had (but is probably not doable) is something we bought on the ship a couple of years ago. It's a waterproof neck wallet. You can put your room key, money, credit cards, and if it's big enough - phone - in it and it's waterproof! We even wore ours while we went snorkeling! There are a couple of different types, the hard box-like ones (the kind we got on the ship) would be $1.26 - $4.72 depending on the size/color/carabiner vs. neck strap, etc). One's that aren't hard (more of a soft material) would be between $2.50 and $4.50. Anyway, in case you can't picture what I'm talking about, here are a couple of pics:
Hard case
Soft case
Now that I'm thinking about it and posting this, I think this idea came more from a desire to purchase something I would actually use. This type of thing really isn't necessary for sole purpose of identifying each other.
Anyway - after all that, my official vote is for wristbands! 
Should I set up a voting poll thing for this topic?
Kris: If you're only going to use it at Disneyland, and only a couple of times a year with no desire or need to have it for the next 40+ years for WDW, then DVC just might not be for you.

It's good to get all the details though. And just remember, in the end we all have our own opinions; you and Sheri will have to decide if it's a good choice for you or not.
Yanira: You're so sweet.

The 4 of us are going to have SO MUCH fun at the Disney Scavenger hunt! We can't wait!

Reception:
I'm kind of glad everyone agrees on the private reception not being a good idea. I have a hard time paying for something that would otherwise be free. Also, I don't know who mentioned it (maybe Kris), but I think I might ask the Disney group agent why they don't do a free reception for us like they do on other cruise lines.
Anyway, I think we should just all meet on the first day (the day we board the ship). Like I said before, this way we can update each other on any cabin numbers that have changed, pass out wristbands etc. As a side note, Ryan and I will already be on the ship from the 2 night sailing directly prior to this one, so hopefully this will give us an advantage with getting some space in a lounge. This is what we're thinking:
Meet in the Promenade Lounge from 2:30 - 3:15
Safety drill should be around 3:30
Sail away party at 4:00!
People in 1st dining start eating around 5:00
Shows begin immediately
If we think that 45 minutes isn't enough, Ryan and I would be willing to set a 2nd meeting for the next morning. The problem with this is that we will be attending the DVC thing on the ship this day, but we don't yet know what time it will be at. Therefore, we don't know for sure what time we could set to get together with everyone.
Anywho - let us know if that's OK. If it is I will put it on our little website as our first "group gathering" posting!
Steve: It's almost August and you're coming in the beginning of September . . . it's coming around quickly!

Do you and Amy want to start settling on a date that you'd like to meet up with all of us? If so, let me know and I will put that date on the group gathering's section for anyone interested. As you know though, Ryan and I are still in!