I agree that the reaction of the media has been very different in the U.S. However, first and foremost, Harry loves his family and wants to find a way a forward. I doubt the Queen or Charles would refuse to let them attend an event like the Trooping of the Color or the Jubilee. A few weeks ago, I would have believed that they would get a very chilly reception from the other royals whenever they came. But I think now more than ever, the family and even the public will pull together to support the Queen.
The more cynical side to me also thinks that they need the royal family more than the royal family needs them. I agree that the public has long memories and Harry and Meghan will probably never be completed forgiven or trusted. But there are a series of events that they will want to be part of to raise their profile for their "brand".
To do that, they will have to be at least tolerated. No one will jeer their presence as long as they are with the Queen. Appearing with the Queen in a few major public events (with minor royals and nonroyal family) and visiting her at Balmoral this summer, spending Christmas with her, etc. is the only way they will ever be tolerated in Britain.
I fully admit that I may be misreading the situation and am interested in hearing other people's thoughts.