I went once when it started tipping it down. vortex, zodiac, samuari, quantum, pretty much all the flats were kept open. Tbh there wernt many that were closed, apart from Stealth, Colossus, Slammer, and Tidal wave. There were a couple more but I cant remember. If the forecast is rain later on, I would recommend going on X before it starts to rain, as the queue gets amazingly big.