India has had a very smooth transition when it comes to acceptance of Public Display of Affection. And most of this transition has happened in the past 10 years or so.
At a point in time, A girl and a boy couldn't even be seen together in public. There was always the fear of being caught by their parents or relatives who would either beat them up or embarrass them publically. Eventually, it became a pretty normal thing and that's when couples started holding hands.
When I was in school, It was major news whenever a girl and a boy would be seen holding hands as they put out a clear statement that they were romantically involved. But as time passed, people started getting hornier. Couples went from holding hands to making out in public spaces. Gardens, monuments, beachfront and many other densely populated places in the city would often be crowded by couples getting busy.
The thing is, over the past 10 years, India has been exposed to the western culture like never before. Everything from international movies to TV shows started influencing Indian minds and making them realise that Intimacy is a pretty normal thing and you always don't have to be behind closed doors to show your affection. And I guess this is what inspires the confidence in couples who make out at Bandstand!
Over time, people have stopped raising fingers at couples who display their affection in public. But that doesn't mean that couples are okay to do whatever they want. India still has strict laws against PDA and if the cops decide to book you, you are in for some trouble. But cops are the least of their worries.
Across the country, there are a lot of fringe groups that are completely against premarital romance. The most popular one among them is the Bajrang Dal. For the past 7 years or so, the Bajrang Dal has been harassing couples across the country. The Bajrang Dal basically comprises of young men who pose as vigilantes and catch couples who are destroying 'Bharat Ki Sabhyata.'
These people catch couples in the act and beat them up. They also notify their parents that their children have been caught making out! And since the Bajarang Dal operates by calling itself a religious organisation, no one can touch them!
In my personal opinion, when people are sexually frustrated and are jealous that they don't have anyone to hit the park with, they join such groups.
Coming back to Making out in public. I think India has become pretty open when it comes to a couple kissing in public, till the point there is no handy stuff happening! Now I'm no one to tell you what you cant do in public, but all I would advise is to keep anything beyond kissing for the bedroom to avoid giving a peep show to creeps who stare at you like its the first time they are seeing someone kiss!