Gujarat

NID is the best. So do not think much. Yes you can do Masters in Designing after B.Tech. Eligibility :
Bachelor degree of minimum 4-year duration in any specialisation, after 10+2 system, from any university or institute recognised by law in India. Condition: Applicant must (have passed/have appeared for/be appearing for) the Bachelor degree.

Your graduation percentage is very low to get admission here. Good luck.

Hello,
Please visit this link:
https://www.shiksha.com/hospitality-travel/resources/nchmct-college-predictor

Follow the latest NIRF ranking of institutions https://www.nirfindia.org/2019/EngineeringRanking.html

You can go for B.Ed course. However, details can be known only through the university websites.

MS University, Vadodara as Post Graduate Diploma in Accounting and Finance, Bank Management, Taxation Law and others. The course I mentioned are relevant to your preference. Please let me know if you need any more assistance.

This link has the best event management institutes in Gujarat:
https://www.shiksha.com/hospitality-travel/event-management/colleges/colleges-Gujarat
DEM (Diploma in Event Management)
DEM (Diploma in Event Management)
MBA and BBA offering specialisation in event management and public relations.
Degree and Diploma courses in event management and PR.