Maintenance schedule

[T-Rod]

I just brought mine in for the 1200 mile checkup. I was originally told it would be about $300. But after I dropped it off the service guy sent me an invoice for over $1000. I called and asked why the difference in price and what are they doing that would cost so much. He said the normal oil, filter, tranny fluid change, diff oil change but then he said they drain all the coolant/change and drain the brake fluid and change. Is this what you guys are seeing? And is it required to maintain the warranty?