Yes, you are required to carry your own luggage on tour. Therefore, make sure you pack only what you can comfortably carry. Some hotels may not have lifts, meaning you may need to carry your luggage up or down stairs.
Each traveller is allowed one main bag (15kg - 20kg) and a small daypack for essentials like a camera, sunscreen, or water bottle to keep with you on the coach and during excursions.