Yes if you have your trial close to the wedding and it ends up being cooler than 100% wear hair like second. but with the heat I would say up! I went to a July wedding and I never wear my hair up, and wore it up because heat was crazy
I prefer the 1st one - the second one looks like a braid was attempted and although it's pretty - like somebody gave up on it... STILL PRETTY - but looks unfinished imo