I was looking through my 2009 Service Manual to see the best/easiest way to change spark plugs. Here's the bad news. In order to gain access to the back of the engine to remove the coils and the spark plugs under them, you have to remove the wiper arms, then remove the "Cowl Cover" at the base of the windshield, then open the hood and remove the "Cowl Underpanel", all of which involves at least 9 clips and several bolts.
There is no other way to reach the plugs. You can't even reach around the passenger side of the block and operate blind, by touch, because the AC compressor hose makes it impossible to get your arm back there.
It is a very good thing that this won't be a maintenance issue for 100,000 miles. It will be very disappointing, though, for people who want to experiment with different plugs. Not impossible, not dealer service shop-only, just a giant PITA.
Changing plugs is a very easy, unobstructed job with the GD's. Honda paid some engineer to design these obstructions to discourage the DIYers, and increase dealer service profits.
He did a good job.