Advice on preparing a scene

Hi,
I discovered your site by chance and wondered if anyone could help?
I am going to act in an amateur drama production. Its a slapstick themed play and my character the villainess has a scene in which she receives her comeuppance being soaked by a bucket of water and taking a cream pie in the face.
Looking for advice on how to prepare. First concern is how to make my reactions spontaneous given I know what's going to come. So far in rehearsals I tend to react a bit in advance spoiling the affect.
Second is the practical difficulty of then acting luckily for a short time in wet clothing.
Any tips and advice most welcome.
Jennifer
I discovered your site by chance and wondered if anyone could help?
I am going to act in an amateur drama production. Its a slapstick themed play and my character the villainess has a scene in which she receives her comeuppance being soaked by a bucket of water and taking a cream pie in the face.
Looking for advice on how to prepare. First concern is how to make my reactions spontaneous given I know what's going to come. So far in rehearsals I tend to react a bit in advance spoiling the affect.
Second is the practical difficulty of then acting luckily for a short time in wet clothing.
Any tips and advice most welcome.
Jennifer