"I could definitely wrap it for you. We offer a variety of models and customization options. Pick one you think they'll like and we can make some visual adjustments later... Let me show you our options."

There's a surprising amount of subtlety in wing packs. Wingspan, weight, tactile feedback, ease of control, maneuverability, safety features, ability to change wing colors...

Minimal weight, as much tactile feedback as is comfortable, most ease, maneuverability, safety, ability to change wing colours, can he also change wingspan, speed...? Honestly just go with the fanciest, see if he can afford that.

Adjustable wings (in more characteristics than span) is a high end but available feature. It's kind of like buying bicycles back home. If bikes were ten times as expensive to start with. More expensive flight packs start to have marginal improvements per cost and there is a big difference in cost between the low and high end.

Would he like to try a few to see how strong the tactile feedback is? Despite already having wings?

Sure, why not.

They figure out a way to make it work with the wings in the way. 

Wearing a wing pack and feeling its tactile feedback is... Not like actually having wings. There is proprioception, there's some sense of the wind blowing over them, and more expensive ones are better, but even the best aren't quite the same. It's unlikely to be overwhelming to a human.

Cool he'll want one. The fanciest one. Wrapped.

Certainly. They start packing all the accessories and manuals.

Would he like it engraved with someone's initials? A new outer cover is relatively cheap. Insurance policied? 

Sure, Terel's initials and his own sounds good. And yep, insurance!

Insurance: Is frequently a good idea. He'll have to pay it every month or charge up an account with a lot of money, like with the call crystal, or he'll lose the policy, though.

In all of five minutes here is a very tidily wrapped in linen or something (wrapping paper: not a thing here) fancy box containing a wing pack.

Okay! He thanks them warmly and quickly returns to his mate.

"...Wrapped box? I probably don't want to know how expensive this gift is, do I?"

"It's well within our means and I don't actually care about money."

"Two excellent points."

He sees the logo on the very fancy box. "...Oooh, I've heard of these guys." And he hurriedly opens it and examines the wing pack. "Ooh! Wing pack! I think your estimate of eight minimum is probably accurate! Further testing is necessary to make sure, of course."

"Naturally. We should fly instead of hiking."

"We definitely should! I don't want to fly anywhere particularly dangerous the first time I use this though... They're supposed to be a little tricky, aren't they?"

"I bought the fanciest available one, it should be pretty easy. Try it!"

So he puts the pack on, and a pair of fluffy white wings appear in a little burst of light. They move a bit, twist.

"Huh." Flap. "I might need instructions after all, this is weird."

So he can instruct his lovely mate.

When he finally gets it down, "Flying is AWESOME!"

"It is! Come on, let's fly up the mountains, I have zero reaction time I'll catch you if you fall."

They don't even need to pack food, Sadde can just make it! Off they go!

Wheeee flying!

All the way up the very pretty mountainside, along paths not usually explored. Kind of romantic. They're probably not literally the first people to see these places - but they're definitely off the beaten trails.

Terel might keep flying until he falls asleep in midair at this rate. Wing packs don't get tired.

If that's what he wants to do Sadde is perfectly content to accompany him in this trek and make sure he doesn't crash into a tree or something.

Not crashing into trees is good.

He turns back early enough to land back at their hotel in Mountaingate about an hour after sunset. "I'm going to use this every day for years, I bet."