The staff are friendly and helpful, including the parking attendants, cashiers, ticket counters, and animal keepers. It's definitely worth it. Try to leave early if you're taking Jatim Park 2 and Eco Park. Both are great. I tried the drive-thru the next day, which was also very good. The food prices inside are affordable. You can feed the hippos, and buy a watermelon for 10,000 rupiah, just for the drive-thru. My only suggestion is to do the drive-thru on a separate day, because if you do it all in one day, you'll probably miss out due to fatigue. Thank you.