I’m a Brit, been over to the States several times.
Passport required. Customs, as other posts. No real hassle as such, but can be time-consuming.
Driving - haven’t done it over there. Know Brits who have. None of them report any problem.
What can you get in the States you can’t get over here in Brit-land? I used to have a long list, but it’s getting shorter as Britain gets closer and closer to being just a far-away state.
I’m a great one for book shops, and I used to really love Borders Books whenever I went over there. Now we’ve got our own branch on Oxford Street in London. Only one, so far, but it’s a start, and almost as good as some of the branches I’ve been to in LA.
We still don’t have Koo-Ka-Roo, as found in and around LA, which is the only fast food joint I like. We still don’t have Jamba Juice, or anything nearly as good, and we don’t have Chilli My Soul either (not sure how many there are oer there either - I found one in Encino, LA, and loved it).
When I was in NY I found all sorts of great shops selling stuff I’ve never seen over here, like Exotica (on Christopher St) which sells all sorts of unusual African artefacts (yeah, Londoners, I know about the equivalents over here but that place was miles better and weirder).
What else? A far greater selection and range of fruit juices and blends, which I adored. I used to regularly cart home the largest bottles Trader Joe’s had for sale, and just enjoyed guzzling them all. Over here, the supermarkets have a far more limited range - do you want orange juice or orange juice?
IMHO, you also have far nicer, more interesting people that I’d much prefer talking to, and WONDERFUL women. At least two of the most wonderful women I’ve ever known were American, so I envy every American male. But I guess that’s slightly off thread!