2015 WRX 12k Required Maintenance

Hey guys, hopefully you can help me out here. If this is the wrong place for this, I'll take it down.

What is the required maintenance that needs to be done at 12,000 miles to maintain the factory 3 year warranty? I can change the oil and filter myself, but do tires need to be rotated etc? This is my first brand new car, so I'm a little fuzzy on the details. I took it in for 6k maintenance, it was really cheap at the dealer but the 12k mile price goes way up. I called and they said the only thing really required is the cabin AC filter besides an oil and filter change. If this is the only case, I'll just do it myself and save the couple hundred dollars. The only thing I cant do myself is the tire rotation but that was done at 6k. I just dont want to get screwed on some warranty technicality down the line. Thanks for help