Keep good collection of your favourite songs in your cell phone or mp3 player. Also do not forget to carry your earphone with you.
In case your family members have not got adjacent seats during automatic seat assignment then make a humble request to other travellers and try for seat exchange so that all of you can sit together.
Take cell number of bus conductor. In case you miss the bus at any stop then it will help you to track him or catch the bus at next stop.