We are planning on doing a Swim with the dolphins at Dolphin Discovery for our 11 and 12 year olds. Does anyone know if it's cheaper to wait till we get there, maybe discounts through Villa del Palmar or walk up at Dolphin Discovery, or book online? Also, what's the cost if I don't want to get in the water, just watch? And we don't want the whole "package" of food, pool, etc. Just the dolphin swimming then on to more Isla fun!