Hello Vaishali. First of all congratulations for choosing pondi as your travel destination. I believe their is no need of advance booking. You can find plenty of hostels which come around min 300 rs per day. Plenty local hostels are available. But it’s wise to choose the places near by market area. There the prices are very low and connectivity is very good. Happy travelling:)
I don't know how many days you will be there.. But I'll tell for 2 days.. Take a rental bike, it costs around ₹250...Roam around the French city.. Visit Aurabindo ashram and can go to Auraville.. Eat some French and Italian things. Take a bus and go to Picchavaram mangroves {don't miss it}.. If you have time then please visit Chidambaram natarajan temple.. It's awesome..And play in the beaches.. Go to the rock beach in the evening, take a wine bottle and enjoy your sip by looking at the sea.. For staying and all of you are on low budget, you can try couch surfing platform.. I use it many a times and it gives you an awesome experience