Can I Find These At A Coin Show

The items you are looking for are available at most of the coin shows that I have been to. Larger shows will have a greater array of dealers as well as offerings. Never pay full retail and always ask what they would be willing to seel it to you for. If you don't ask, you will always pay retail. Most will also provide a better discount if you are going to purchase more than one item. Good luck!

to the Community!

I moved your topic to the main forum for a wider appeal, since the forum you had this in is typically used to announce shows.

Naturally the larger the coin show, the more different types of everything you'll find. At some of the larger ones I've gone to I've seen Indian Artifacts, jewlery, knives, stamps, currency and oh yes, coins.
One nice thing about coin shows is you can get to talk to dealers and ask for certain items. Some of those dealers may have a coin store in the area so always ask.

The items you seek should be easy to find at most coin shows.
If by commemoratives you are referring to the modern issues, they are usually easy to find. The classic commemorative series is a bit tougher and more expensive.
Most modern commemorative dollars sell for close to their bullion value.
Before you go to a show, inform yourself of what the going prices are for the coins you want. Never be afraid to ask for a discount, especially if buying multiple items from the same dealer. A simple "Is that your best price?" will generally garner at least a small discount.