I will report our Hagrids experience from the last 2 weeks of July.
We rope dropped Hagrids 1 day (we prefer 2 rides on Velocicoaster in the morning). Anyway, we left Aventura at 6:50, arrived in line at IOA by 7:05, went to the very right entry point, and were 4th in line. Once the park opened, after speedwalking the 1/2 mile back to Hagrids, we were off the ride by 8:15.
Now, our favorite time of day for Hagrids was night time. We would get in line anytime between 9-9:45. The line was NEVER more than the posted time. The night we got in line at 9:45, the wait time was 90 minutes, and we waited 38.