I don't get the impression that Amelia is "country club"...if you look at her IG, almost all her content is hiking, camping, swimming, hanging with her friends and family. No high society events. I don't know why they split, but maybe just the stress of the pandemic, and trying to balance being in two locations? She might be more of a free spirit, and he might be more of a homebody, if I had to guess.
MAFSFan just posted that the honeymoons this season will be in the Florida Keys. And the Boston weddings were filmed this past weekend.