Our family attend Luke Days on Sunday, March 20th and had a good time. I love that the admission is free, so everyone can see the airplanes and the show. We did arrive early so we didn't have any issues with traffic or parking. Everything was very organized. The show was awesome and the kids loved it! We will definately be going again next year.
However, there is room for improvement. The food was good but VERY pricey. The kid zone was also very pricey and the lines for the bounce houses were awful. We waited 30-40 minutes for the kids to go on the rocket ship bounce house and they all agreed that it was NOT worth it. The rides the older kids wanted to go on, were too much money. I understand they have to make up for the free admission for $10 per kid to go inside of plastic ball or jump on a trampoline, or $4 for a small fry, or $5 for a lemonade - even Disneyland is cheaper.
Suggestions for visitors next year: bring your own chair (rentals are $5 a chair and the ground is uncomfortable), bring your own water but don't open until you're inside, bring plenty of snacks, and don't show your kids the kid zone unless you prepared to spend a lot of money.