I can confirm they will honor AAA, referral discount, national DTV offer(with or without autobill pay). I singed up a few weeks ago through AAA while the previous national offers were ongoing. I originally only had ordered a HD receiver free upgrade. I called back this morning to see if I could get the current offer since I was still waiting for my install. They modified my account and gave me the current offer(Free HD DVR and HBO, Starz, Showtime free for 3 months.
NOTE: I did have to call twice to get this deal. The first CSR told me the offers could NOT be combined. I called back and got the deal.
Its amazing how varied the responses are from the CSR's. Oh well.