In the hotel scene where May is knocked out, she is wearing a full length slip, but the dress she was wearing was open almost all the way up the middle.
Sunil Bakshi removes a light fixture from the ceiling in the hotel room where he is threatening May. There are only two wires, where there should be three (hot, neutral and ground, according to code). Additionally, the first (or at most second) time he touched the wires together, it would have tripped a breaker, thus discontinuing the electrical circuit.
When Talbot catches Coulson and May leaving the party, Talbot's car has a tag on the front. Florida does not have front tags.
The HYDRA agent who 'borrowed' Agent May's face didn't borrow her cup size as well, but in the scenes afterward, it's clearly Ming-Na Wen playing the HYDRA agent's role.