The biggest advantage of owning a drone under 250 g is that you don’t have to register it. However, weight is not the only aspect you need to be aware of. There are other regulations that still apply. In the US, drones are considered UAV (unmanned aerial vehicle).
Here are a few regulations that you need to be aware of:
1. Never fly your drone near another aircraft
2. Never fly your drone after consuming alcohol or drugs
3. Always stay below 400 ft above the ground level (or the maximum height allowed for that specific area)
4. Always keep a safe distance when flying over people.
5. Never fly over crowds. Big groups of people cannot move away quickly because of their number and other people around them. Examples of such crowds are: sports events, marches and rallies, music festivals and concerts, etc.
Emily Wilkes said:
I never thought about the 5'th rule. I saw many videos which ignored it from festivals.
same