I have personally been so many times to adlabs imagica, it is first of divided into two parts frist is aqua and rest is adlabs, aqua is all about water rides and it is really amazing in summer and it is located in khapoli which is near mumbai the oter part is about different rides and many things which will make your day out, it is like a disney land of india , for birthday it is free for birthday guy, it is always busy on weekends I advice you to go during the week thats better and it has complete value of money and its for all age persons not just for childrens and the ambience is also really good, you will also find good restraunts inside the park but outside food is not allowed