I go to 5 or 6 Royals games a year. I have one big recommendation, and that's sitting on the 3B side. That will put you in the shade early evening. It you go to a day game, you'll need to sit in the 200s in one of the higher rows. That way you'll be under the upper deck and in the shade.
I love where Kauffman is because I live in Columbia, MO and it's on the very eastern edge of KC. The setup is a lot like the Texans. It's two stadiums (Arrowhead is right next to the K), surround by an ocean of parking. It's right on I-70 and very easy to get in and out of.
The Royals are looking to move downtown when their lease expires (2030, I believe). Clay County (north part of KC) wants them as well. Either way, their days at the K are numbered. It's a great park, and I think you'll enjoy it.
I have tickets Wednesday night. It's a hot dog-themed jersey giveaway. I'll get a catsup, mustard, or relish Royals jersey.