What should I bring with me for 3 day autumn gateway tour?

For rafting:

• Swimwear (to wear under the wetsuit)
• Thermal underwear (if cold)
• Extra clothes for changing after the trip
• Towel
• Sunscreen

Regarding weather conditions:
Whitewater rafting is fantastic whether it's sunny or rainy!

For mountain biking:

• Clothing suitable for biking, focus on comfort
• Thermal underwear (for colder conditions)
• Own gloves (for comfort or warmth)
• Windstopper jacket or rain jacket (for windy or cold weather)
• Sunscreen
• Sunglasses
• Enough water for the tour

Optional: Own pedals or saddle