I love Thanksgiving & 4th of July more than all the other holidays! 4th of July because it's right beside my birthday - so I always reckoned those fireworks were all for me me me.
Plus all those great memories of hot hot summers.
And Thanksgiving - it's true (like what the Brits say) it's a bit like Christmas with the turkey dinner (although my family would have something else for Christmas, usually ham), but I like it because it's just about food, family/friends & fun - none of that pressure messing about with gifts. And again, all the great memories from the Thanksgivings my grandma used to put on when I was a kid with all my extended family around (most of whom are gone from the world now).
Those holidays tend to be the only times that I feel a bit homesick for the US.
So I usually do something here to celebrate - although it has to be on one of the weekends before or after, where the day itself doesn't fall on the weekend & of course we don't get the day as holiday here. Personally, most Brits I know would love to have another paid holiday - no bother!
And I invite my fellow British/American/Canadian mates over. We did a BBQ in July. And for the past 3 years, we put on a huge Thanksgiving feast - where everyone brings a dish. That one has gotten to be a bit overwhelming with the volume of cooking & the number of people, so we decided to take a break from it this year - DH and I took the week off & we're off to the Yorkshire Dales to celebrate instead (self-catering), plus any of our friends who are up for a week away then (but it won't be the full 20+ strong crowd we've had in years past -- we need an extra house & a caterer & staff!).
In the beginning, my DH was only slightly reluctant on celebrating these, but he loves our big American get-togethers now as much as everyone else! I agreed to move here for him - but not to check all my American traditions at the door.
The other Brits who come love it too! That table groaning with more food than they might have seen before in one place. Lol!