Jun 1, 2016 - 8:16 AM
Hi Bachhu, welcome to MySwissAlps!
The cable car operates as long as the pass road is open, which should be the case late September. You can get tickets from the hotel. The cable car is indeed self operated. That means there will be no staff but you can indicate you want to ride the cable car by pressing a button or making a call with the cable car phone. It is safe and it won't operate in bad weather. You can also reach the Sidelhorn on foot from the parking lot at the Grimsel pass.