I wouldn't do disposable cameras. You will get the same picture 100 times. theknot.com has GREAT prices on favors. One idea that would include pictures and make things more personal would be to have a small photo holder with different pics of you and your fiance at each table. That would be very affordable for 100 people. The Knot has great sales. Wait until they go on sale. We did candy and put them in the mesh bags that coordinated with our colors at each setting. This was very easy. OR you could do a candy "bar" and order different candies and guests could make up their own bags during the reception. There are a lot of great ideas on theknot.com. :)
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