Congrats on the admit to all the great schools. If you are an international student, I would definitely suggest to take the dollars. All the schools are almost equivalent in terms of reputation outside the M7. The $$ saved can help you to travel to networking events throughout the year, impromptu visit to companies of your choice and the dollar also helps to get big burden off your back before you enter the school. I can tell you from my experience that if you have to do TAships, work part time, etc. then you will definitely miss out on the MBA activities and other MBA events.
Unless you are looking for specific marketing roles or companies associated with Fuqua or Darden, I would suggest to take the dollars and enjoy the two years of your MBA.
3 years back I was in a similar situation and left an Ivy league University because it was very costly. I ended up where I would have eventually if I had taken the Ivy league admit.