Me, my mom, and a friend of mine visited this site in Nov 2019. I've always wanted to visit Borobudur. I hired a taxi guide to go here, I think others may rent cars or use public transportation.
We arrived around 11 AM, the temperature was already very warm. We bought some hats and rent an umbrella, we came unprepared, hehe. From the gate to the temple the distance is around 200-500 meters, so we took a Delman ride (horse carriage) to circle around the vicinity before going to the temple, it was pretty fun!
At the temple, the heat from the sun is unbearable, I then understood why most people recommend going here early in the morning or at dawn. My mom didn't go to the peak, only me and my friend did. There were quite a lot of people taking pictures at the inscription in the temple's walls, I saw some people praying there too. I think it would've been better if I hired a guide to tell some stories about the temple, I didn't do this because I wasn't gonna be there for long given the very hot temperature and I still had to go to some places after Borobudur.
We took the tour cart when exiting and then walked for a couple of meters towards the pick-up area. There were a lot of gift shops, so as snack vendors around. We stopped by a stall to try Es Cendol, wasn't good at all, so I don't recommend it.
All in all, still a good experience, managed to take some good photos of the temple. And I had a good time with my mom and my friend.