im going on my first contiki trip and was wondering if its okay to drink on the bus??

you are impossible. no you are not drinking on the bus. this trip is for enrichment, the plan is to get you to go outside your normal self and expand your horizons. So since you are normally a very heavy partier don't expect to do the same in Europe. It is okay to enjoy yourself but no going crazy!! When you graduate we will go crazy but for now lets soak it all in respectfully. Thanks, your big sis.