Do you think Dawn showed up to see Paul fight Brandon?
I don't remember whether I answered this question or not. Canonically, probably not. She may have run into him at some point and found out they'd battled and that he'd won and been really happy for him, but I doubt Dawn would've made the trek all the way up to Snowpoint City to see him, unless it was on her way home or if Barry dragged her there.
How are you guys going to celebrate the upcoming Ikari Day?
I celebrated by writing this: http://www.fanfiction.net/s/8267257/1/Trigger. It's my contribution to the festivities. I also enjoyed browsing through the Ikarishipping tag on Tumblr.