Traveled for 1st time on Air-Asia flight, though I had used it while going to Bali. The experience was wonderful. Both the airport at Bangalore and Jaipur was good.
A few tips:
1) You have good eating options in BLR airport after security so do not worry. It is tad expensive but if you have left very early for a morning flight you have an option at least.
2) If you are a first timer in Jaipur, there are pre-paid taxi from Airport. Come out of the security and just before exiting the airport main door, you will see the counter.
3) Always go there once you have a booking in a hotel. If you are confident of handling traveling on the go, thats fine but if you are of the type that do not want hassles, please pre-book. I was told of this by many friends.