Zach can tell that the priest enjoys dangling the secret in frontof him, so he tries to not-so-subtly enquire as to their destination. Predictably, the priest lets nothing slip, but he doesn't really mind. It's nice to get out of the house for a bit, but he doesn't expect to much of the outing. It will be through no fault of the priest, of course, but it's not easy to surprise a being like himself. He's seduced humans in many countries and in all walks of life. It's not like you can get anything impressive from a priest's wages after all. 

Still, Zach had fun playing along with the excitement. He's been behaving less and less skittishly and it will be good for the priest to see him at unburdened for a bit. He shpuld probably start coaching the human his way in dreams pretty soon, and it will help if his mind has somehing to work with. Zach is pretty sure that Kiel is the type to behave all 'honourable' when presented with the affections of someone in his care, so it will be important to plant some seeds of longing in his mind before making a move for real. Of course he also isn't above u ding the mans compassion to his advantage, but one can't make longing out of pity alone. 

It isn't long before they reach their destination, and Zach puts up an excited front as they reach the building, even though he has to admit it's not what he had expected. The letters above the entrance spell out 'aquarium', which only brings to mind some overpriced fish swimming in a small tank that a previous mark of his had been far too proud of. Still, the priest had presumably thought hard about this outing, so he is going to at least pretend he was-

His train of thought grins to a halt the moment they enter the main hall. Blue light throws flickering shadows on the walls and people as the visitors are dwarfed by the sheet size of the tranks. Tanks that contain a greater variety of fish than Zach had ever thought to imagine. His jaw all but dropped when a giant sheet of a fish gently flew through the water, scattering a small school of colourful, iridescent smaller ones. The incubus might have been all over the world, but he'd never had any reason to look below the surface of the water. 

He is torn from his wonderings by a question of the priest, and it takes him a few moments to drag his gaze away from the majestic creatures moving behind the glass. He should probably be worried that he'd forgotten to keep up a mask for a few moments, but seeing as amazement is a pretty appropriate reaction, he lets it slide. 

"It's. ... amazing, "he saus quietly, but honestly, not wanting to embellish needlessly when he is so impressed. He has to hand it to the priest:it's quite an accomplishment to impress a70-year old demon whose lives work it is to experience as many worldly pleasures as he possibly can. " I love it, " he continues, aiming his most brilliant smile Kiel's way, "it's perfect! " He impulsively moves in for a quick hug, before darting away again and pulling the priest with him. "I want to see everything!"

He knows the priest will enjoy seeing him enthused about something, so he doesn't hold back as he moves from once aquarium to the next. underwater life is more alien than he'd thought, and Zach delights with every strange and wonderful new creature he sees. Of course he always keeps his goal in mind, and it takes no effort at all to Mold his enthusiasm in a shape he knows will light his face up in the most attractive manner. He keeps touching Kiel in little ways, dragging him to a next exhibit and putting a hand on his arm to alert him to a particularly bright specimen. He laughs often and freely, and in the excitement the time flies by. 

Eventually even Zach agrees they need to take a rest, and they sit down on a bench next to the water-themed food stand. He his still smiling ear-to-ear, chatting happily about the critters he'd seen that day. 

"And the wavy ones were great as well! I didn't know fish could look like really weird plants. Turns out, there's a lot of things about fish I didn't know, actually."