Attend a concert at the entertainment capital of the world:
Vegas hosts multiple shows throughout the year and people from around the world attend the concerts so, I would suggest you guys book tickets in advance to avoid overpaying and also wait.
Explore your wild side at Vegas nightclubs:
Let yourself loose, have a drink or two and enjoy the night by dancing to the upbeat music in any of the hundreds of nightclubs located in Las Vegas.
Treat your taste buds:
Most popular chefs across the globe like gordan ramsay, sanjeev kapoor, and many others own a restaurant in Vegas. So, choose the chef you love and enjoy a meal in one of their restaurants.
Best time to travel to Las Vegas:
As I specified earlier Las Vegas will entertain you 365 days a year. So I suggest you guys plan your trip based on the weather conditions. If you are summer person then you can visit during Feb to Sep otherwise you can travel during Oct through Jan.
Apply for USA tourist visa either through US Consulate website or contact any trusted tourist agencies who can help you get a VISA.
How to get to Vegas:
The only way to reach Las Vegas from India is through the air.
Where to stay:
I recommend you stay in any of the themed resorts because staying at these resorts is actually cheap. In fact, I was able to find a Groupon deal for 29$ a night.
Cost details excluding tax:
Flight cost(2 way) from New Delhi to Las Vegas: 58,000 rs(788$).
Hotel stay per night: 21,00 rs (30$).
Budget meal: 21,00 rs (30$).