Hi, and good luck with your game.
In my opinion:
Anything that is custom, you will need to manufacture and supply. If your game plays on a conventional table, either blackjack size and shape or a regular roulette table, you can likely just provide the felt, or offer them a vector graphic for their felt vendor so they can choose the color and add their logo, as well as required printed notices (which will change by jurisdiction ). If the standard size works, but the table must be cut or altered for the installation, you should probably plan on providing the table anyway.
However, you will need to provide the custom electronic sign, the software, the data input method (whether electronic or hand-keyed), special chips if standard roulette colors or house gaming cheques won't do, and the roulette wheel if it has different values from a standard wheel.
If your game can use any standard equipment, sign or wheel or whatever, most casinos should be able to provide them. But I can't speak for them, and you should have a full working demo built regardless.
You will also want to provide table cards in the standard size for a rack display for players, or a template for the casino to print their own on their stock (These explain the game from the player's perspective, and are giveaways).
You will want to provide step-by-step dealer instructions, both in writing and in a training video. A math report, both the professional detailed one, and a one-page synopsis that brings out the house edge, any paytable info including available variations, expected hit rate.
You should also have the game analyzed for weaknesses and vulnerabilities such as collusion or whatever other issues may arise, both from dealers and players, and any safeguards or recommended practices to counteract them. Provide this information in a separate written report, even if it's negative ("there is no mathematical effect if 2 players collude", etc.) Ideally, this would be done by an independent expert, and may already be part of your math report. It's important that you show you've considered this.
You should prepare a speech, no longer than 30 seconds, that is an example of how a dealer would explain playing the game to a new player, and make it as simple as possible. You should be able to demonstrate the game (or hire someone to do it) using this intro speech. You should also memorize the math facts, vulnerabilities info, and any other details so that you can answer questions during the demo. It works best if you have 2 people, one to deal professionally, the other to talk and interact with your audience.
I would also suggest a marketing illustrated brochure with the basic info on the math, patent, game play, contact info, and layout that's a single sheet (both sides printed, folded like a brochure) and have a few hundred printed so you can leave them with anyone who's willing to talk to you, whether they let you demo the game to them or not.
These days, it seems wise to provide a Web page with a lot of these available. That would also be a good place to link a demo video and a training video. But I would put the website address in the brochure, possibly even with a password listed there, rather than making it public access. It's expensive to program, but possibly worthwhile, to have a working demo on the website. Hard to give you advice on some of these things, because you've not given a lot of details.
Again, since your game is custom, I strongly recommend you provide the entire package, what we call a turnkey operation. However, for at least the first few installs, you should be prepared to offer the use of your equipment and game for free for at least a few months, possibly lifetime on one or two, to get an initial placement.
All JMHO. YMMV.
Two recent and valuable books on this subject are available, both written by members on this website with much more experience than I have.
Jacobson, Eliot :http://www.amazon.com/gp/aw/d/1883423171/ref=mp_s_a_1_9?ie=UTF8&qid=1498992316&sr=1-9&pi=AC_SX236_SY340_FMwebp_QL65&keywords=eliot+contemporary
Lubin, Dan :http://www.amazon.com/Essentials-Casino-Game-Design-Table-Game/dp/1935396722/ref=sr_1_2?ie=UTF8&qid=1457445450&sr=8-2&keywords=dan+lubin
"If the house lost every hand, they wouldn't deal the game."