Line up and wait, position and hold is the biggest one. Also, all transition levels are 180 assuming you have the altimeter setting to support it. Probably won't matter for your instructional flight though. Another thing I miss is the ATC ability. When you are in radar contact and switch controllers they already know who you are, where you are, what you are etc. The only thing they need from you is call sign and altitude/fl. Saves a lot of radio chatter.
Have fun and enjoy the States.
three in the green? In 25 years of flying in the States I don't think I ever said that. At some military/civilian airports the tower will say confirm gear down. I always assumed it was a requirement for military ops that was just applied to the civil aviation as well. My standard response was negative as the switch was made before gear down was called for in our op specs.