This sounds a great read (as always !) and one to look forward to, I'm busy reading 'The Dante Trap'and 'The Lying Tongue' both set in Venice along with a reread of Donna Leon's first Brunetti novel 'Death a La Fenice', so will be all set and raring to go when Theresa hits the waterways of Venice !
I'm pleased that the 'partnership' with Macmillan appears to be getting stronger and stronger over time and hitting the top of the Bestsellers lists should create even more recognition for your work.
Does this recognition have a major impact on your life as with other forms of celebrity or as I would hope , allow you to do more of what you want to do more of the time ?