The Orlando Amphitheater, a new outdoor concert venue taking shape at the Central Florida Fairgrounds, is scheduled for completion within the next few weeks. More than three years in the making, the privately funded Orlando Amphitheater – that’s the venue’s actual name – is set to begin hosting musical acts in mid-April. On the banks of Lawne Lake near the back of the Central Florida Fairgrounds on West Colonial Drive, the $1.15 million amphitheater with a 60-foot-wide stage began construction in January. The first event scheduled at the Orlando Amphitheater, which is operated by the Central Florida Fair, is Earthday Birthday, a festival hosted by WJRR-FM on April 23. The 10,000-person capacity venue is general admission with no seats. Concertgoers will be allowed to bring chairs and blankets for seating on the inclined lawn.