First let me set the stage:
- Location: Outside of Tokyo (Lake Sagami or something similar)
- Time: End of April
- Temperature: The temperature at night is above 9 °C
- Weather: It's dry (not raining or snowing)
I have no camping experience and just want to sleep outside for a night or two.
What is the difference of sleeping in a tent compared with just a sleeping bag? Is it warmer? What are the other advantages?