Sentences about campsite activities:
- At a campsite, you don't have to wear uniforms.
- At a campsite, you have to wake up early (if you want to see the sunrise, for example).
- At a campsite, you don't have to make your beds.
- At a campsite, you don't have to do any cooking (you can buy food or eat at a restaurant).
- At a campsite, you have to keep the campsite clean.
- At a campsite, you don't have to wash clothes (you can wear them again or use facilities if available).
Answer: The sentences above use 'have to' for necessary actions and 'don't have to' for optional or unnecessary actions at a campsite.