<p>I am meeting my alumni interviewer at a coffee shop. </p>
<p>1) Should I buy a drink? </p>
<p>2) Should I offer to buy my interviewer a drink? </p>
<p>3) How long should the interview last? </p>
<p>4) Who should end the interview? </p>
<p>Thanks!</p>
<p>Alumni interviewer here. I would suggest that if you arrive before the interviewer that you wait until the interviewer arrives before you buy anything. I always pay for my interviewee, and I would bet that’s very common. If s/he offers, graciously accept. If s/he doesn’t, you can go dutch. You absolutely do not have to treat the interviewer.</p>
<p>My interviews usually last 30-45 minutes depending on how chatty the applicant is. I would say you should take your cue from the interviewer as to when it’s over. It should be pretty obvious.</p>
<p>Thank you for the advice! </p>
<p>My interviewer was very friendly and I had an enjoyable experience. </p>
<p>Now, I would like to extend thanks. I only have my interviewer’s email address, so is it alright to send a thank you via email? </p>
<p>Also, about how long should I wait to follow up? 1 day? Less? </p>
<p>Thanks again.</p>
<p>Yes, an email thank-you note is fine and appreciated. I also do interviews and am surprised by how few students send one 
I especially appreciated the student who sent one before I even arrived home!</p>
<p>Thank you!</p>
<p>I just sent a thank you email. :)</p>