CBS News Correspondent Mark Phillips spoke with their friends and admirers back home. He says they're waiting, watching and worrying.
It's a little late for a honeymoon, Phillips notes, and, "Frankly, the United States would not seem a restful first choice" for Charles and Camilla, now the Duchess of Cornwall.
Both have gone through a successful public relations rehab program in Britain, particularly since their April wedding, Phillips reports.
"Charles seems to have been transformed from the grumpy, muttering-under-his-breath, semi-recluse who talked only to his plants," Phillips says.
"He's happy. We're all nicer when we're happy, aren't we?" royal family friend, and novelist Jilly Cooper asked rhetorically.
And Camilla, Phillips says, has gone from being the shadowy "other woman" to being the charming, stylish-in-her-own way, reason that he's happy.
"She is a shy woman," says Vanity Fair columnist Victoria Mather. "She doesn't want to be center-stage, and I think that has all gone extremely well, and everyone who has met her has been enchanted."
But the U.S., Phillips stresses, is historically Diana country so, in any number of ways, Camilla has a tough act to follow.
Can Camilla avoid inevitable comparison?
"I think (Camilla) is rather glamorous (too)," says Mather. "I mean, flip it around the other way. Look at Camilla, and there she is, wearing fabulous clothes; she's now got the clothes thing right; fabulous, enormous hats; I mean, she is known as the Duchess of Cartwheel in the big hats; looking glowing. There's hope for 58-year-old women! You, too, can go out when you are an old bag and marry a prince. It's terrific!"