If you are travelling by this train then it is very difficult to get u seat if u are travelling by general compartment.if you have a reserved ticket then there is no tension.But if u are wish to get the seat in general compartment then u have to board the train at MUMBAI CST only.You can board the train at Dadar,Thane as well as at kalyan but there are no chances of getting seat You have to travel by standing in passage.You Will definitely get seat once the train passes PUNE JN.but at MUMBAI CST there are 99% chances of getting seat in GENERAL COMPARTMENT.