Campers arriving early Thursday to Firefly

Campers set up their campsite early Thursday morning at the Firefly Music Festival in Dover.

Alex Papa of Fairfax, Va., fills a Laybag with air in the camping area at the Firefly Music Festival in Dover.

Desi Chester, left, Deja Chester and Leta Kile of Fredericksburg, Va., set up their campsite early Thursday morning at the Firefly Music Festival in Dover.

Haley Cupp, left, of Ridgely, Md., and Josh Betz of Huntingtown, Md., set up their campsite early Thursday morning at the Firefly Music Festival in Dover.

Festival goers arriving early Thursday morning at the Firefly Music Festival in Dover.

Campers set up their campsite early Thursday morning at the Firefly Music Festival in Dover.

Pinwheel spins at a campsite at the Firefly Music Festival in Dover.

Michelle Cooper, left, and Troy Yarnall of Newark set up their tent in the camping area at the Firefly Music Festival in Dover.

Campers set up their campsite early Thursday morning at the Firefly Music Festival in Dover.

RV's lined up to park at their campsite Campers at the Firefly Music Festival in Dover.

Firefly Traffic moves along Leipsic Road behind Dover Downs in Dover.

A festival goer walks along Leipsic Road next to a line of traffic at the Firefly Music Festival in Dover.

Katie Usary of Boonsboro, Md., lays on top of her car in the camping area at the Firefly Music Festival in Dover.

Campers arrive at the Firefly Music Festival in Dover.

Campers at their campsite at the Firefly Music Festival in Dover.