Shooting a Jewish Horah is the one of the funnest things to shoot for a wedding photographer. Why? Because they are fun, loud, and always unpredictable. I have shot Horah's where people fell off of chairs (none were hurt), people were launched clear off the chairs, and just in general it's a heck of a way to kick off a new marriage.
First the bride and groom are lifted onto the chairs followed by the parents of the bride. The bride and groom hold a cloth in between them and hold on for dear life. As a photographer the best and only way to truly capture the essence of this moment is by getting into the action. It can be a little intimidating at first because there are a ton of people and you can't really even know where you will end up because you are too busy taking the pictures. But once you get the rhythm down, and you just decide to have fun with it, it can be a very rewarding experience.
In order to maximize the picture opportunity for your clients you need to make sure to set proper lighting, and you will need to make sure to use either a video light, an external flash, or both to get the best shots. You also need to make sure to keep your shutter speed fast enough because there is a lot of movement going on! For these shots below which were all shot on manual mode, the settings were: Nikon D700, 1/100 sec at f/4.0, 16mm at ISO 3200, flash fired.