I've had no direct dealings with RedRoo, so can't comment there. However, in one-to-one communication, I don't think a name is unreasonable. Indeed, it's polite.
But to the OP's question, I think expecting an email address for a (relatively) high profile person to be published so publically is unusual and unreasonable.
Finally, I once had quite a deal of difficulty with Vintage Cellars and guessed the email address for Coles Group boss Ian McLeod. He gave a polite reply and passed the buck to someone in marketing/PR/customer care. But the bottom line for me was that the direction from the Group GM gave the gravitas to have the issue resolved promptly.