6) What's the difference between Day trips & are how suitable are they for younger children?

Search for Santa - The meeting with Santa takes place in a cabin in the snow covered woodland, and with 80% of your time spent outdoors is more suited to older children
 
Santa's Secret Grotto  -  Approx. 60% of your time is spent indoors, the inside venue is a large cavern, themes of winter and Christmas. It's more of a theme park feel to the experience and therefore suited to the younger ones aged 4, 5, and 6 years old.