You don't have to remove and body panels or the seat the get at it on the DT300i. Folks here in the forums have posted that it's possible to change without removing stuff (except for possibly the exhaust nuts, which the dealership did to switch my standard plug for an NGK iridium at my first service, then either reinstalled the two exhaust manifold nuts improperly or forgot to put them back on, they made good on it -- if this ever happens to you, and hopefully it doesn't, while they're ordering and you're waiting on the proper long capped metric replacement nuts and lock washers, you can use an 8M metric nut you can get at Lowes for under a dollar for a bag of four, btw).
