Thanks, Sir G.
I'm in Western Massachusett. I'll actually be in NYC next weekend so maybe I'll just bring it there. I didn't know they would tailor anything that wasn't bought at the store (though Donald and his tailoring crew did take care of my raw denim jacket I bought from Mr P).
I left the pants with my tailor to let out a bit but now I'm rethinking that. Might just bring the whole thing in.
Oh cool, the tailor there is Ilena (IIRC). It's 50/50 whether they'll do it gratis. It'd be good to give them a call the day of or before to ensure she'll be around. If you buy in the store, there is no charge, but outside there might be a few. My guess, $100. Maybe if you buy a shirt or something at the same time they won't even charge you, but it's not an easy job to take the sleeves up. While you're there, I'd recommend they check out the top back of the jacket as well. It's rare that there wouldn't be a bubble of fabric there, i.e., that it drapes perfectly, but maybe you got lucky!