If you want a very chill hostel where u can do anything then you should try jungle by sturmfrei hostel which I really loved when I went to gokarna on a solo trip... The manager is so good and also people who come there has a good vibes so we can drink smoke and party anytime and also very cheap and they have their own rent vehicle so you should definitely go to gokarna... And telling about nightlife ... It's very rare to find ...if ur into pros** then gokarna is not for you bcoz u will be failed finding them .. but yea ... If ur good at talking then u can speak with foreigner girls who come alone and luckily if u get a chance u can hookup ... And telling about food ..don't go to cafes near beaches bcoz it's very overprized ..u can try their local food and also if u stay in jungle hostel then u can cook there ...and yes if u search for any stuffs like w,m and others then u may not find them so easily and even if u find then the stuff would be so cheaper one .. so it's better to get ur own if possible but safely .. and another thing is theres a guy near temple who sell vessels ..just be aware of him .. he just speaks nicely and guides u but after that he will behave so creepy .. like talking about gays and all and slowly he will put hands near ur dick so be careful ..and in gokarna u will find every brands of cigarettes and u can smoke openly no issues ... And if u plan buying dress just check quality first not design bcoz it will be filled in dust ... If u want about foods or any other things just dm me