You will definitely like going to IIEST Shibpur. It is a very nice college and you will like the vibe there. Try not to bunk your classes as there is a minimum 75% attendance policy and they also link marks to your attendance in the end semester exams. You will settle into the workings of the college within the first one or two months of the first semester itself.
As far as the faculty is concerned, the teachers are quite cooperative and will let you enter the class even if you are a few minutes late. Do have a valid reason though. On the other hand, a few teachers are quite strict and will not listen to you at all and will want you to attend all their classes especially those from the electrical engineering department.
If you are concerned with the curfew timings, you have enough time till 11 pm to enter your hostel and can roam the campus till then. You can go anywhere you’d like within campus and get to know more about its heritage and just appreciate the overall beauty of the place. However, carry your ID card wherever you go.
All in all, you will have a great time at IIEST Shibpur and will definitely make good memories there.