Do I really need a reservation for Cappella Sansevero if I'll be there in late October?
I was there in December and the lines were looong and it was raining. Based on that, I would certainly make reservations for rye Cappella.
I was there in April. I went first thing when it opened and was able to buy a ticket and get in after a 5 minute wait. However, I think I may have been lucky as the line was very long by the time I exited. This sight is one of my favorites ever. It would be worth a wait in my opinion, but if you can book in advance, I would do it.
I agree with bj84, definitely worth waiting in line to visit the Capella. This was one of the most beautiful sculpture displays I have seen. For me, literally a breathtaking experience.
I was there on a Friday in May, middle of the day, and walked right in.
I've been there in April, May, September, and October( I keep taking friends) I've never waited in line, and with the ticket office now on the side there's never a line to get inside.