Kalahari

My husband and I want to take our son tomorrow and stay the night. Im still experiencing daily morning sickness all throughout the day and wondering if we should make the trip. I'm worried about the heat in the water park making me feel worse! But we really want and need this trip so I really want to go! What do you guys think? If I drink enough water do you think I'll feel okay to go? Or is it too hot in there and not a good idea or safe? What about the water? Is it too hot for me to swim in? I know it's heated but not like a hot tub is.