Hello!
Yeah they weigh you at the interview. The day is broken up into 4 sections and the 3rd part is the groming, they check your height, weight, arms and legs for tattoos and scares and are constantly watching you through out the day!
I went to the London heathrow interview and I got the job, its very exciting! I have a small tattoo on my arm which needs to be removed and once its gone I'll be going to Bahrain! The contract is really good and Bahrain seems like an interesting place!
Are you going for an interview in the US?