Can I use AND in a SWITH function in Access? : I have create this function to check holiday prices in MS Access:

Holiday Price: Switch([Holiday Type]="Single",£1000,[Holiday Type]="Couple",£2000,[Holiday Type]="Family",£4000)

This works but I'd like to add another field (Activity) from the table that checks if an activity has been booked. It this field is not empty I want it to return £1200 for Single, £2200 for Couple and £4200 for Family. 

Any help would be greatly appreciated. I am fairly new to databases.

Thanks