H1B, H4 Visa

Hello All, I have been following this forum as I have my h1b stamping interview on may 14 and thought of asking some questions as it might be helpful. I graduated in dec 2012 and got job right after graduation as direct full time employee working out of employee location and no end clients . I was working as asoftware engineer from Jan 2013. I was on first opt from dec 2012 to dec 2013. I was on opt extension from dec 2013 to may 2015, however I got h1b picked up in lottery in 2014 and my h1b started from October 2014. I moved to another company b in Jan 2015 and even this is a direct hire full time employee and no end clients or vendors. Since Jan 2015 I have been with company b and they also filed for my h1b extension. Now my second term h1b is from 2018 Jan to 2020 nov. while I was on opt , opt ext and first term h1b I did not visit India and there fore no h1b stamping. Now my question is that the stamping interview I am attending on may 14, is it h1b stamping or h1b renewal stamping as this is my second h1b term. And recently there have been a lot of rfe’s so I am not sure if this long gap in h 1b stamping would cause me a trouble. My 3rd question is do I have to carry org structure and project documentation to the interview as I am a full time direct employee. Any comments would be helpful