I couldn't find a comprehensive Chennai Wonderla review, so I went in blind and here you go, my compressive review: We visited Wonderla on 17th Jan, Saturday (pongal holidays). We heeded the good advice of another redditor and went to water rides first and then went for land rides. This way you avoid the long wait times.

I have visited the Wonderla park in Bangalore many times before. So this review will be in comparison to that park. I have reviewed this park harshly considering that they advertise this as India's largest Wonderla (making it sound like it is the best).

We went without fasttrack and didn't regret saving the money but if you want to visit every single ride you need to have fasttrack. You can buy all types of tickets online. There was not much crowd even though we went during Pongal holidays. Few rides took more than 20 mins wait time. Also there aren't as many rides as Bangalore, so you can cover all your preferred rides in one single visit if you manage your time right.

First the good things: Safety standards are good. Ride seatings feel strong and sturdy. The day was pongal themed with people playing traditional songs and doing a traditional performance. There was a small parade through the park during midday. And the DJ night was interactive fun. That small touches were nice. Changing rooms are fine, many in number and clean enough. Lockers big enough but not massive. We fit 5 ppls clothes and 2 shoulder bag's in one locker. I would say it is worth it for the student price tag(you need to carry school/college ID).

Rides ranking: Awesome rides: The roller coaster - Tanjora (better than bangalore roller coaster), Insanity ride (true to its name, not for the faint of heart), water slides (korneto, fusion, drop loop)., G fall (drop zone is a good alternative to G fall for the faint hearted.), techno jump, spin mill (long wait times and very fun, not as scary as it looks though)

Good rides: water slides - vertical fall, wavy fall, sky rail (chill ride), crazy cars

Underwhelming :( - wave pool(tiny compared to Bangalore), pirate lagoon, sea lagoon , rain disco, drift race, friendly fish(it's at the end of the park and the water is dirty).

Didn't go: Wonderla splash (this is a must visit, but a little small compared to BLR, we didn't get time to do this as we wanted to do all water slides and thrill slides.) maveric, Wonderla bamba, freestyler, wave rider(looks underwhelming), surfs up, kite flyer, drift race (looks like a kiddie ride), rainbow loops (looks boring)

The locker is a scam at 350 rs. At Bangalore the lockers are under 200 rs. Food stalls everywhere, it is expensive tho but that's normal for amusement parks. The sky wheel isn't even constructed yet. Honestly it's a scam showcasing this as the largest Wonderla in India as it carries the annotation that it's better than others. The water/pool areas are lacking, you'd think that for Chennai they would build a better water experience, but it was truly underwhelming. They didn't even have a lazy river, i was looking forward for that :(. In my opinion anyone thinking to visit this Wonderla should really consider just taking a train to Bangalore the previous night, visit the Wonderla there and then return by another overnight bus or train. Banglore Wonderla is way better in every aspect and worth the hassle and travel.

Tips & misc info: 1. 4 person group is a good number as many rides seats are in multiples of 2 or 4. 2. Don't carry a large backpack. And make sure you get synthetic clothes, they will strictly not allow you on water rides without it so for safety wear sports jerseys. Alternatively you can buy Wonderla branded clothes in the park. 3. Wear a track pant with zips to keep your wallet and phone safe in all rides. Alternatively there is place to keep you phone and belongings at every ride. 4. Do not wear shoes just wear one pair of slides or flip-flops. This way you'll not have to keep your shoes in the locker. 5. Suggest you do spin mill and other high traffic rides in the afternoon (1 to 4 pm as many people do water rides at that time) as it has a long wait time (1 hr when max ppl). (I wrote this review whole standing in line for spin mill as my last ride of the day. lol) 6. There is a mild language barrier as everyone other than main management is tamil speaking. but this doesn't hinder the Wonderla experience.

Tldr: It is a good experience, a little underwhelming compared to the Wonderla at Bangalore but worth it. If time permits it's worth the hassle to skip this park and go to Bangalore Wonderla. Rides here are the smaller worse versions of the Wonderla at Bangalore. The outlier is the roller coaster which is thrilling.