Mornings are a Nightmare

I had someone once tell me that when you have teens that it is like they are toddlers again.  They have to constantly be watched and it seems they become helpless again.  Unfortunately, my teens are starting to lead me to believe this. 

It is funny how in elementary school, they kids never had any problems getting up for school, but now that I have two teens, my mornings are a nightmare.  My daughter gets up at 6:30 in the morning to her alarm and then moves to the couch until about 7:00.  At 7:00 I start bugging her to get up and get ready for school.  I used to have to only wake her up once, but now she is impossible.  Mornings have turned me into a nagging mom threatening my daughter that she had better get up.  I have even bought cappuccino that she likes to get her to wake up in the morning.  I am to a point where a caffeine addiction is better than my killing her and going to jail. 

As for my son, he gets up easier, but cannot seem to consistently set his alarm or get up to it.  So, I find myself most days, waking him up at 7:15 because he didn't set his alarm.  On days he does set his alarm, I have to end up going to his room and turning it off because he will not get out of bed to turn it off.  He lays in bed for a couple of minutes before he actually gets up and sometimes I do have to nag him a little bit too. 

I am considering getting a bull horn to blare in the morning so that I can save my voice from having nag the kids to get up.  Any parents out there have a good solution on how to wake up teens?