1200 miles? They don't want you to change the oil for 10,000 miles or 12 months! There's an additive in the OEM oil that helps the reciprocating parts seat in properly.
Given older Hondas' reputation for burning oil, I'm inclined to follow their directions. However, when I do my first oil change next October, I'm planning on using full synthetic; I always do. It's much much better and on a year-to-year basis it's just not that much more expensive.
Congratulations on your new car and welcome to TSX Club!