Yes. But the hack is you should pay utility bills by buying amazon pay gift vouchers from GyFTR and loading money in Amazon Pay balance and paying bills using amazon pay balance. Not to pay utility bills directly using Amex card
Regarding fuel, at HPCL pumps you don't get RP and you don't incur convenience fee as well. But spending counts for milestone benefit.
If you purchase IOCL fuel coupons on Park plus using Anex card and using them for fuel purchase you get RP also. I haven't tried it