Dear Mary: Can I run out on an apprenticeship for my dream interview?

Q. I have been trying to get an apprenticeship in fashion for over a year without success. I just had a day-long interview where I had to sew and cut and was employed on the spot. My problem is that a few hours later, I got the call to come in to be interviewed by a designer who has been my fashion idol since I was 15. He would be much cooler to work for. He may not offer me a job but it seems like a chance of a lifetime. How should I play this, Mary?
—Name and address withheld

A. Honour is all. ‘Employed on the spot’ means that you accepted. Start the apprenticeship but still turn up for the interview with your idol, explaining as you walk in that, although you are sadly no longer available, you wanted to tell him this in person as you are such an admirer. You shouldn’t miss out on the chance to meet him and show you know his work because, as in speed-dating, it only takes about three minutes to know if the chemistry is right between employer and employee. Such a meeting means he will be much more receptive should anything change and you apply to him again a few years down the line.

Q. After going out for lunch or dinner with an old friend, there is always so much to follow up on that an email exchange swiftly ensues. If the friend has paid, it is natural that my email should include thanks for their generosity. This means that the subsequent thank-you letter loses its punch, and yet it would be wrong not to write one. How can I cover both needs without appearing to be overdoing it?
—S.