Do you let the airport staff (ie. greeter who asks "which hotel?" or the Red Caps) know you are meeting up with Clives? That's what I do, and they always ALWAYS have made sure I connected with someone from Clives. Deshawn (sp) from Clives is usually at the airport, making sure everyone is taken care of and gets into their vehicle. Their loading point is near the phone booth at the outside edge of the pickup area.

Of course this doesn't help with your missing pickup from Negril. That would be more stressful, IMO. I always confirm with them my pickup from Negril a day or two ahead of time. I'm not so concerned on arrival as I know it will work out.