So, like many others here, I was going to be completely on my own today. I have family, but my sister and I are estranged from a parent, and my DSis and her family are away on holiday, as the schools are off. DBro and his family are with our parents.
I'm single and sadly, childless.
Y'know what I did? Didn't think of it as Easter. I had a bit of a lie in, and then called my best mate (also on her own), and we met up, had a walk (when it wasn't hailstones!), and went for a coffee. I've just arrived home from hers, as we had a takeaway at her place afterwards. It was a lovely day. We even got an Easter pastry in the coffee place!
My advice - and I've also been an expat, in New Zealand - is to take advantage of meeting with others who might not have family/partners/etc., and go do something not related to the holiday. So, on Christmas/New Year when I was in Dunedin and Wellington, we went to the beach, had a walk, went paddle boarding, etc. I think it feels worse if you're trying to transplant your home activities and traditions to a new setting. You're with the family you've made. Sounds like a lovely day with a BBQ, and your DD. Enjoy the pleasanter sounding weather, and don't think of it as a big family event. Lots of us are not having that picture perfect, chocolate box, experience. Take care.