We started our journey early morning from Chennai to Pondicherry. As per initial plan, we thought first go to Mahabalipuram and then continue our journey to Pondicherry but last minute took decision not go their. Although we covered that place later on. It took ~4 hrs to reach Pondicherry. We first went Auroville center and spent a good time there. After that we went to Pondicherry city where we see Sri Aurobindo Ashram, Ganesh Temple, Beach bay. We spent 4-5 hrs there and continue our journey for Rameshwaram. My recommendation is stay a night in Pondicherry and enjoy the some cafe on beach side. We saw few temples on the way to Rameshwaram and reached there around 10pm in night. There are planty of options are available to stay at low cost. My recommendation is book in advance because some time heavy crowd surprised you. Recommended things to do - Water Activity (we didn't did this), Dhanush Kodi Visit, Early morning sunrise from Rameshwaram temple front, Spent time on Rameshwaram bridge (alleast spend 1hr by walking on bridge), Early morning (~4am) Shivling special darshan, late night sleeping pooja (~8pm).