Last year, i heard lines were long in Richmond (didn't go there). I went to CC after opening (was my 4th stop, think i was there around 8am?) and lines were somewhat long still (over 200 people). NCIX in general have lines starting pretty early and a decent line-up during boxing day sales. Not as many people as BB/FS but relative to the checkout speed and size of the story, they get way more people per square feet and thus their lines take much much longer (in most cases) than big retailers (reason they are never my first 3 stops). Add to that they checkout speed are always slow in the first place, boxing day doesn't help.
Generally speaking, boxing day places to avoid = EBGames and NCIX unless you're already done your day. EBGames is just as bad as some decide to do trade in while making purchase (and i'm not talking about 1 or 2 games). Of course given your trade in (now) takes off subtotal when you buy on the spot vs you don't get it off subtotal if you do 2 transaction, it makes a bit more sense (now vs before) to do trade in with purchase... but it doesn't help checkout speeds when there are only 2 machines.