Probably too late for this shoot, but for someone reading this thread in hindsight. One poster suggested not using a tripod. There are two schools of thought here.
1) Don't use tripod because then your shots are more "live" and you have flexibility to move to get the framing you need. However, you (the photographer) will appear to be hiding behind the camera. Especially for someone not used to be photographed (which is most paying clients, except for models needing headshots) they need the eye contact with the photographer to feel comfortable.
2) Take the time to set up the shot before hand with a tripod. Then stand to the side and engage your client, eye to eye, while you talk them through some poses that won't make them move beyond the bounds of what you have set up. Then, repose them and reframe the shot, and step back to the side.
With people I don't know well I will usually start with the tripod. You can actually get some very candid and energetic shots this way. I like being able to also pay attention to all the details I can see (loose hairs, dust on shirts, etc) live rather than through the view finder. In most cases once the client has gotten warmed up and more comfortable you can then pop the camera off the tripod for a while. I don't know which way gives me the best shots.
Like any portrait shooting, you (as the photographer) need to be able to read your client, and adapt to their needs - not make them adapt to yours. If they need the eye to eye contact in order to show you what you want to see - then it's tripod time. If your client likes to spin cartwheels in the sand, then handheld is way to go.
Hope the shoot went well.
