If you're watching TV or movies - just remind them that you need the captions/subtitles on.
If you're playing games, choose ones that don't relay on hearing - things like pictionary might be a lot of fun (no signs, just gestures)
You might want to let whomever would likely wake you up exactly how to wake you up without scaring the you-know-what out of you (have them lay on the bed, and then you physically demonstrate what to do) ... that way THEY will be confident about how to appropriately wake you up if they need to.
While spending some time "learning" is ok (hey, it's great they are interested ... not all friends are) - it's important that the entire time isn't a "free teaching session", unless you want it to be. If you've had enough for the moment just say something like "OK , I need a break from that for a bit - maybe we can do some more (then name a specific time)"
Remember - these are friends, if you find something not working, or that you're falling behind in a conversation then be open and honest about it.
If people are constantly talking over each other, two things that may help are:
1) Have people slightly raise their hand/arm before they start talking
2) try making a game of it - get a soft item like a bean bag, clean rolled up socks,clean dishtowel knotted etc. When someone talks they have to be holding the item... because it's soft, you can toss it from person to person.
I'm not sure how old you are, however you mentioned that you parents typically wake you ... you may want to look into getting a sonic alert "Sonic Boom" alarm clock that will allow you to wake independently of anyone helping you. The Sonic Boom alarm clock is also good for travelling
- and there are a number of specific small "travel alarms" available as well.
Most of the Sonic Alert alarm clocks will receive signals from other sonic alert signallers, such as a phone/vrs signaller, doorbell etc ... these are easy to use in a "hearing house" because they simply plug into the electrical outlets. This would allow you to be aware of the phone, doorbell, etc without having to rely at all on your hearing.
Just a thought