I purchased roundtrip tickets on Norwegian JFK-ARN, however as I notice all of the current reliability issues with the 787 and norwegian only having 2 planes but 4 different routes once im due to fly what are the chances that they will have troubles? If the aircraft for example goes tech for a few days what will some of the options be if I can't fly out of JFK? I am planning to do a european vacation with ARN as my entry point since the flights were quite cheap however I don't want to book many hotels to then discover I cant leave NYC. Any opinions towards what might happen?