Recon is only needed when you drop your vehicle, do engine modifications besides the basic intake or go 2" bigger in rim size than what was factory equipped.
You can get away with coilovers adjusted back to "stock-ish" height depending where you go. There are a few places, which can't be mentioned, where you can go with recon & they'll pass you for double the price, sometimes triple depending on the extent of your modifications.
Tint laws for sedans & hatchbacks are no less than 35% light transmission all around with a threshold of -4%. CUVs, SUVs, Minivans & Trucks are 35% on the fronts & no limit on the rear doors or windows, just for future reference should you get another vehicle.
Knowing this, I still don't give a fahk about recon or tint laws. Lol. My previous 1st gen 6 was dropped on tein springs with 1" in total height cut from the coils with 18x9.5 with a low offset for a 6 stuffed in the fenders with -5 degrees camber in the rear, blacked out all around & HIDs & LEDs all around. It's a luck of the draw on Oahu. Some cops don't care, some get bored & pull you over. I've only been stopped once for my tint when I had the 6. Luckily the cop was nice enough to only charge me for 2 windows. Ticket was $292. Stopped multiple times for no recon on a car that obviously needed it. Always let off with warnings except when I got pulled over for doing 87 in a 45 on the freeway by a rook cop. Being respectful & cooperative goes a long way. Cops will let you off most of the time unless they're riding with someone else or just having a bad day. Also, be forewarned, some cops here drive POVs as cop cars. Met many people from the continental that tripped out on being pulled over by camrys, 4 runners, maximas, altimas, & other vehicles you wouldn't believe. Lol.
The Mazda scene is prett scarce here. There are plenty of modified 6s, 3s, Miatas, SUVs & the sort, but no strong local Mazda community to unite everyone in one event/meet. Tried when I was on the Mazda6Club forums, but I was one of 3 or so members still active on the forum. Might be different on here. Still a 3 day old newborn here. Haha
Hope this helps. My apologies for the painfully long post. Just thought I'd share my run ins &I experience as well with the above mentioned laws/mandatory checks for a vehicle on Oahu.
Aloha