I grew up on the US/Mexico border where, at the time of my youth, the population was 65% Mexican (it's now over 80%). Many residents are bilingual and we hold our own unique traditions.
I grew up with both Santa Claus and a "Posada" that is a procession from the Catholic Church in Mexico to the Catholic Church in my US city during the month of December.
We had "Carnaval" a few days before Ash Wednesday, which is similar to Mardi Gras in Louisiana. We spend the Holy Week doing many religious activities and also had the American tradition of Easter baskets. Our most fun part of Easter Sunday was the Mexican-American tradition of "cascarones". We would spend the entire Lenten season collecting egg shells. When someone would make eggs, they were careful to make an opening at the top and clean them because we would then dye them, fill them with confetti, cover them back up with paper and use them for Easter egg hunts. When the eggs had been collected, we would then crack them over each others heads. It sounds mad but it was good fun.
Obviously, we have Fourth of July, Thanksgiving, etc... But I also celebrate, "El Grito" on the night of September 15th. It is the "cry for independence" of Mexico from Spain. I know the words to the Mexican national anthem as well as the one from the US and have deep respect for both.
I married an Englishman and had two of my three children in England. There were no Posadas, no Mardi Gras/ Carnaval, no cascarones, no grito and mariachi music on September 15-16th. However, I appreciated the traditions and the everyday things of their life in England because it's so different from my own. I enjoy Guy Fawkes and Bonfire Night, learning the words to your national anthem, the BBC, eating fish and chips, learning your history, the Royal Family, your green and pleasant land, the cold, the rain, etc...
We did eventually return to the US but we don't live in my hometown so again, their daily lives are more different than mine and my spouse. It's all good. I could try to bring the English/British/Mexican life that my husband and I led but they will have their own. Apart from Pancake Day. After you've experienced Carnaval or Mardi Gras, eating pancakes is a bit lame 😝