just back from the Spirit of India trip, a very packed schedule, 7 hotels, lot of coach travel on bumpy roads, the food was excellent, I took the travelaid pastilles as recommended and had no problems; if you have got an e-visa make sure you look out for the e-visa signs at imigration in Delhi, there are different desks depending on the type of visa you have, we all queued at the first set of desks only to be sent somewhere else as we hadn't spotted the signs. On this trip you can exchange currency at the hotels at better rates than the airport, most of the retail opportunities (carpets, jewellery, marble) tend to be in the higher price range so if you are going with the intention of bringing back a carpet or something make sure you have your cards set up to use abroad.