An addendum, and please feel free to take this with a grain of salt. According to a email list of spoilers sent out by an insider (no, I'm not a member), there will be a scene where the Romulan ship is boarded by security officers and MACOS, and the casting sheet calls for several Romulans, including one named Valdore, an obvious homage to the warbird from Star Trek Nemesis. Although there is no mention either way if the human boarding party gets a look at the Romulans, it is concievable that if they did, they would all either die before they revealed the truth or somebody decides to cover up the fact that the Romulans and Vulcans are identical, given humanity's latest xenophobia kick as seen in last night's episode.