I was at the new consulate a few weeks ago submitting our I-130 through Consular Processing and cant attest that you cannot take anything in except a small bag for your documents. No electronics, no cigarettes, no lighters, etc. Only take the bare minimum you need. Luckily we drive and left our stuff in the car a block away. There are old ladies who will watch your phone/stuff for a fee but I would be hestitant to do so. As for places to wait, the weather is starting to get cooler so can sit on the short wall outside the consulate. Otherwise, there are several coffees shops and the opposite end of the block where the entrance is located. A small Starbucks is in the office building across the street from the consulate entrance.
