Wikipedia defines HDR photography as:
“High-dynamic-range imaging (HDR) is a set of techniques used in imaging and photography to reproduce a greater dynamic range of luminosity than possible using standard digital imaging or photographic techniques. HDR images can represent more accurately the range of intensity levels found in real scenes, from direct sunlight to faint starlight, and is often captured by way of a plurality of differently exposed pictures of the same subject matter.”
What this means is that the image produced is far superior to a non-hdr image. Each image will show all detail in even the darkest corner at the proper exposure, including anything that may have been lost in the shadows of a normal image. Non-hdr images are limited in range of exposure, whites/black and detail.
The HDR images take a substantial amount of time to create both on site and during processing after the shoot. Due to this a 24 hour turnaround should be expected but I think you will agree that it was worth the wait once you see them.
Examples will be posted here soon!