Early last month I was offered an internship and verbally accepted over the phone. I was then emailed an offer letter, and a bunch of information and forms to fill out. The email said to let them know if I had any questions and told me what day/time to show up. I did not reply to the email but did fill out some forms it linked to.
All of our communication has been over phone/skype/email because I attend school out of state and flew home right before my first interview.
Now, it's been a month, and that was our last communication. The internship starts in about a week and a half. I don't have any questions to ask (at least not any that I feel are worth asking before I show up in person -- maybe I could ask about the dress code). I am worried that my failure to respond to the email and continued silence will make me look bad, or they will think I'm not serious about the internship. I don't think they are going to take the internship away or anything; I just don't want to make a bad impression before I even meet them.
Should I send an email now just to break the silence sooner than later, or would an email the day before saying I am looking forward to my first day be sufficient?