Hey @Hoss-Drone
Here's what I'd recommend:
Before going, watch the reviews of the 4 different Saber types that SirJames did on YouTube:
Peace and Justice:
https://youtu.be/k8ZlfBEh8as
Protection and Defense:
https://youtu.be/n88Pv9lDoB0
Elemental Nature:
https://youtu.be/GyLkABz1jPY
Power and Control:
https://youtu.be/cF4UvIGcua4
These will give you a really solid overview of all of the options and should allow you to at least figure out which of the four options most appeals. You'll need that going in since you have to choose your Saber type before they let you in the door.
You also get a choice of 4 crystal colors in the workshop: Blue, Green, Red, and Purple. Gold and White are available at the gift shop but aren't part of this experience. If you want a red crystal, you might be better off choosing a different color during the experience and buying it from the gift shop, as there's a chance it could be a black crystal (still a red blade, but interacts differently with some of the other swag you can buy)
If you're just getting the Saber, and you just want one color, then disregard the last bit and just choose red anyway, as the rest of what I said involves spending extra money.
As far as accessories go, they're completely optional, but I went with the belt clip, as it works with both D-ring and cycloid connectors and makes wearing it a lot easier if you want to nerd around after you get home.
Speaking of getting home... I HIGHLY recommend a wall mount. Much better than it just sitting in its case in the corner. They're very reasonably priced on Etsy and can make your Saber a centerpiece of a room.
As for the experience itself, I'll just say two things:
DO NOT watch any videos of the actual experience if you can help it. It's better to go in not knowing what you're going to get.
DO NOT film it. Have your wife do that while she's rolling her eyes. Just take in the whole experience and enjoy the moment.
I can legit say that building my lightsaber was one of the best parts of my last Disney trip in 2021, and would highly recommend it to anyone who wants to nerd out to Star Wars. Make sure you get a picture with your Saber in front of the Millennium Falcon after dark if you can!
Most of all, enjoy it! And post pics!