Thanks everyone for your suggestions. While the idea of wheelchair is good, they are in good health and do not need the service and I can't have them fake it. Thanks for notifying me the transit time in NY due to passing through immigration. I will tell them about it. I will shout out for help once they confirm their travel, I could have gone to NY but it's like 4 hrs drive and they were not uncomfortable to do domestic travel so I have a little confidence in them though they haven't travelled, at least I have confident that they can find their way.