Perfect timing.
"Caster?" There's Sunny at the side of the tent again. "Are you decent?"
What the Heroic Spirit can't see is Sunny making a small grimace. Speaking to a Servant is apparently a great way to realise how strange some modern sayings are. Well, not that older sayings would be un-strange, but...

"Oh, I'm glad."
The young man peers around the corner of the entrance, his face (as usual) the picture of deadpan apathy. 
"Would you happen to like a smooshed hat?" he asks, coming out into frontal view and holding said hat out like an offering.
Honestly, why does he feel the need to do things like this?

If common sense were a food, Sunny'd be all out of rations.
"Of course." Sunny half-drops the hat into Caster's reach. He sees absolutely nothing wrong, obviously. 
"The bus stop is a ways away in that direction," he says, pointing in what seems to be no direction in particular. "I am ready to depart when you are." 

"Let's go, then."

(Rereading has affirmed that a brief timeskip is pretty much needed to maintain a semblance of proper pacing, so I'll be initiating it without asking you. Hopefully you don't mind xD)

Wearing his backpack again (which looks heavier than it was previously), Sunny and Caster start out for the bus stop. The path to their destination is long and bright and curving. Assuming no objections were made, Sunny simply takes the reverse path of the road he took to get to the summoning leyline in the first place. The surrounding trees and blades of grass all look a lot more impressive in the increased luminosity, at least in the mage's view. It's still a bit bright, though. He probably should have put on sunglasses.
The pair seems to have a tendency of walking fast, so they reach the bus stop soon. There isn't anyone else waiting, which manages to be fortunate and unfortunate at the same time. But the stop itself is simple, with a very visible sign indicating to potential passengers where it is and where it goes, and a nicely maintained shelter in case of rain. As of the moment, there is no rain to speak of; the weather hasn't changed much, and only seems to be getting sunnier. At the very least, there's still a faint chill in the air brought on by the breeze, which helps prevent Caster from overheating in that very interesting outfit no one else has had the privilege of seeing. Yet.

"Would you like to pay for the fare?" Sunny is asking Caster. Of course he's asking about such a mundane thing again; what else would one expect? He has his wallet out (money? magic!), but he's currently holding it securely in his hands. The detail seems to imply a degree of caution when it comes to how visibly he holds his money. 

CASTER WADDLE!

"I do," the mage says, and then completely misinterprets what's being misunderstood.
"May I assume the Grail filled you in on money? As in, the concept that paper with markings has extrinsic exchange value?"

(The C in Caster stands for Communication issues)

Sunny thinks the Grail should have handed each Servant an allowance to begin with, but he keeps that opinion to himself as he ponders the situation.
"Would you like to?" he asks. To try to indicate what he's talking about, he pulls his wallet out a bit in the other's direction. "I was wondering if you would like to pay using the papers that I have. I mean, money." He shakes his wallet, but since he's talking about paper bills, it's not like they're about to make a sound. 

"One of these per person."
Sunny drops a paper bill into each of Caster's hands. Probably a $1 bill. The narrator's being cautious of money development for literally no reason.
"I don't have change," he explains, "so this is a bit more than what is needed." He pauses, and then further adds: "Nazoja makes its public transportation cheap on purpose." 
Nice trivia to know. Maybe.