I have been asked to photograph portraits of people at an event in June and the client would like them taken outdoors on a bridge and showed example photos of a past event. This seems fine in principle but I would usually use studio strobes for this and I said this would be a problem if it rains and suggested that they could invest in some waterproof continuous lighting which would light the background and the people. Only issue now is that I have no experience with sourcing this kind of lighting and they have asked for a quote. Anybody got any suggestions for a good place to hire or buy this or if there are any better alternatives I could consider?