Oh dear! Did something like that happen to you Russ?
Not Russ, but my Fiance took Norwegian to OAK (CA) in April and his flight here was decent, but on his way back the plane was stopped on the tarmac for 4 hours before takeoff! Something about a flat tire they said, but he was very grumpy about it. Nobody was compensated in any way and the flight didn't include food so he ended up running out of the snacks he brought. 
That being said I am still considering taking Norwegian because the economy flight for them is $140 vs $500 on other carriers! Even business class on Norwegian is only $550 for my one way from SF to LGW, so at least I would be comfortable if we get stuck on the plane 
