Outdoor Venues

[Cloudwalk]

Anyone have experience performing live at an outdoor venue? I'm performing at a downtown street fair, and I'll be controlling most of, if not all of my sound mix. How well does ambient translate on a PA outdoors? Do you make any adjustments for it? Usually I have drifty space music with lot of pads, and I like to bathe my mixes in long plate reverbs, but I'm wondering if that might not translate as well outside on a downtown street.
Thanks for your help!