It would not be a good idea to join NICMAR right after the completion of a B.Tech degree. It will be better to join NICMAR after having 2-3 years of work experience. You can easily get a salary package of 5-6 LPA.
The reason NICMAR is so popular among students is to open new opportunities. In the past, profiles in Planning and Contracting have been offered. It will also enhance the chances of promotion after graduating from NICMAR or any higher studies.
However, it is important to talk to the currently studying students or the recent pass-out batch student and know the real situation.