According to the Dreamland website today:-
Due to adverse weather conditions there will be limited ride availability today (Thursday 2nd June). We are sorry for any inconvenience caused but customer's safety is our primary concern. Existing ticket holders can use their tickets to come back on any other day in the season (until Sunday 4th September) or alternatively guests can gain entry to the Amusement Park for £10 today.
Why not experience Dreamland Undercover; the Roller Disco and Diner, Amusement Arcades, Dreamland Emporium, Morellis Ice Cream Parlour and the Octopus's Garden which are open every day or visit the Only Fools and Horses Exhibition in the Ballroom - here at Dreamland every day until Sunday 5th June.
According to the Met Office weather forecast for today:-
A cloudy start to the day with a little drizzle in places, but it should gradually brighten up through the morning with some sunny spells developing, especially in the west. Maximum Temperature 18 °C.
...they can't even be bothered.