Goa airport information

Hi, a family member is transiting South Goa airport, Dabolim on a domestic travel. Same airline, same PNR. So baggage will be thru checked in and boarding passes issued. 1. There is a 5 hour transit time. They will obviously be allowed to go outside? Anything to do during the time, not far from the airport? 2. Any economical restaurants outside the terminal building? TIA