Are fairy lights a hazard in a canvas tent?

[recall]

My DH is obsessed with rigging them up without touching the tent, would they damage it ?

Are they battery lights i always put them over the tops of our tents, they look lovely and we can see our tents a mile off.

I think LED ones would be ok as they stay cool - I wouldn't use the old fashioned sort.

Oh right?.I will get some LED/battery ones then?tarr