Interviewed a few years back. Didn't get offer then I always say it was because I didn't buy the water they had for purchase. Not because it was a trick but because by the time I got to my 1-1 they immediately hand me a an announcement to read and my mouth was so completely dry on top of being nervous. That threw my whole interview off BUT the experience was great and people were very friendly . I was sent back to airport after that first interview and did not get offer. Last week I recieved an email inviting me to interview again which I'm really excited for! Going to San Fran monday interviewing tuesday afternoon March 3. Hopefully this time is much better ! I have heard the process has changed.