Grooming and attire, I thought about adding that in but then quickly realized I could write an entire post on it. But here is the 30 second version. Dress for the job you want (yes i know very cliche but true). Look clean, professional and fit in with the location you are going to. You want the people you are meeting with to feel to are fit for the company. One thing to remember, iron your outfit, its ok if it looks like you want to impress them.