When you enter the country on an H1B or otherwise do anything related to any visa status, the onus is on you to carry around all relevant and supporting documentation, in physical, original paper form. Visas, passports etc. existed before computers, probably in much the same way as they do today.
Look up events in your area and go to some that sound cool, even if they aren't the sort of thing you would normally do. Find cheap concerts for music you normally don't listen to. It doesn't matter if you go alone - tons of people do, especially for less well known bands. Learn a hobby about making something, even if it's just a better dinner. Or take a class on making things (woodworking, metalworking, pottery, sewing, whatever). Among the people in tech I know, photography and running also seem to be popular. Next thing you know, there won't be enough time after work to do half the things you want to do.
Look for hobby groups at work as well. For a medium to large company, there are probably a lot. We have a casual after work board game club that gets together once a week, for instance.
In my experience, every time I've been to Whole Foods they don't have basic produce, condiments and sauces, etc that I would expect to have at a normal grocery store. Common vegetables are just missing from the store for no apparent reason. And their selection of anything Asian is awful, much worse than even Safeway. It might be a regional thing (I live in a city) but where I live Whole Foods is expensive, bizzarely limited in selection, and caters to a very specific lifestyle and diet - I get the impression it caters to people for whom cooking for themselves is a special occasion and not a daily thing.