How diplomatic would you be if this was left outside your door?

"It's obvious that the three of us do not get along. However, in order for all of us to co-exist in this apartment there need to be some guidelines. Please be respectable to the time whether it be early morning or late evening and try to prevent doing the following:
-Slamming any doors, cabinets or wardrobes because it's not necessary.
-Blow drying your hair during the early hours (We wake up early most days of the week and there are only limited opportunities for us to sleep in; if you don't have to be anywhere early, you don't need to blow dry your hair that early)
-Bringing in loud visitors and either not shutting the door, or contributing to the loudness (There are times when we are studying or sleeping and the loudness gets in the way)
The biggest issue is the noise volume. Please just take into consideration what we have stated above and if this continues to persist, we may have to contact the CA."