Moscow is great I was there a few yers ago, back then you had to be really careful with your US cash for hobby or other below the radar purchases. They cataloged you cas going in and you had to keep your official receipts for all exchanges to rubles, it was coded to your passport.
Amazing place though,sat in a Tex-Mex bar beside Red Square drinking imported beer ( kind of surreal) watching the girls. Damn , memories. My buddy and I concluded that there were just so many A-class females around that it was almost like they had a rule. Less han gorgeous girls are not allowed in the tourist areas.
It was a great experience, will go back again. That is where we went to fly the MiG29 which was admittedly better than hobbying.