Know your power settings for 90 KIAS in cruise and in landing configuration, so you can arrive at the right speed and keep on speed when you put the gear and flaps down, without being head-down in the cockpit.
Practice spot landings, as well as gracefully accepting when you land a little long. Landing 200 feet after the assigned dot: normal. Ground-looping on the assigned dot: bad. Going around because you missed your spot by a few feet: not necessarily bad, but kind of annoying for everyone involved.
Go in with full fuel. That way, you won't have an emergency if you end up holding for a while.
Go in with a clean bill of health. If you have maintenance done just before the trip, test fly it a bunch somewhere other than the Fisk arrival.
Have good alternates selected for various situations including long holds, bad weather, and mechanical issues. One guy when I flew in the first time (2018) had an alternator failure and I wanted to scream, "Go to your alternate, it's right there in the name of your problem!"
Plan to arrive VFR, no matter your qualifications or luck getting an IFR arrival slot. It's more fun and more likely to succeed than insisting on going in IFR.
Know how to get an IFR slot in advance, so if you end up needing one you are closer to the front of the line of the people competing with you for the slot.
Bring real tie-downs, plywood to put under your wheels, spare oil, a power bank for your phone, cash, and a credit card.
Study the NOTAM. It changes a little each year but not a lot. It's all very easy, it just seems complicated because there are different scenarios that they have to plan for and they have done a good job with it.