It's actually for in the garden but I thought camping people might have some ideas 
The garden is a total sun trap, and without wanting to complain, it is often just far too hot to be pleasant and an umbrella does not give enough shade for everyone when we have friends/family over.
I want something that can stay up all summer so it would need to be fairly sturdy. Also, the way the sun shines later in the day, it would need two sides to keep us in the shade. 3m x 3m is probably the best size for the space that we have.
I have looked online, but there are so many that I don't know where to start! Guy ropes are not really going to work for us, so I would need one that we can peg down to the patio (happy to drill holes!)
TIA 