The big issue is the bandwidth that your mobile hotspot delivers. Netflix is smart enough to send a less quality signal for slow connections, so it might work OK. Really, the best thing to do is to try it, maybe with someone else’s hot spot, before you cut the cord. The secondary issue: Most cell providers say “Unlimited”, but once you use a certain amount of data, they slow your connection by about 80% – to a trickle. So you have a connection but godawful slow. You need to check that out as well.