Guys, just a suggestion: don't carry these prejudices against business majors to your interviews. Business majors used to be quite rare in medical school - but now we're not. And you probably won't know until too late what a 4th year student sitting-in on your interview had as an undergraduate major.
Personally, before medical school I was a Certified Public Accountant with a Master's Degree in Taxation. I assure you, I worked my a** off. 20 years later, I took all my med school pre-requisites at night while still in practice as a CPA in administration at a large health system. That was no walk in the park, either, believe me - especially since I had to compete successfully against you undergraduate science majors. And I was old.
One last thought: if the business majors getting to party bothers you, you may want to think twice about med school. Everyone you know in their 20s will be starting careers and buying toys and houses - while you will have no social life whatsoever for 7-9 YEARS. Don't minimize this - sometimes during finals week when I passed someone in the grocery store who was laughing, I wanted to grab them by the throat and ask, "Do you have any IDEA of what I'm going through?"