Don't forget that they will be working with a scanner that's leagues ahead of the flatbed epson, likely colour calibrated to the films too.
You have got pretty close with this one (nextdoor) anyway. I find a good staring point is to white balance on the unexposed film between the frames and go from there.

Well done under harsh light as Cindy noted.

Overall the colour match is pretty good, especially the water, the people and thir clothes. On the right the rocks are pretty similar too but this seems to change to the left of the people. Here the rocks seem to have more red in them, not disconcertingly so, but I notice you have two vertical stripes to the left (is this the shmeg?), a magenta-ish one just in from the edge and then a much fainter honey one the same distance right. The lab version doesn't have these.

Is it possible to get the lab's profile? It's often suggested in the literature that if you're thinking of getting a lab to print for you, then you should get their profile and do your post colour work using that to ensure WYSIWYG. Mind you, the colour match is pretty close - see comment next door.

Yeah couldn't get anybody to go down there with me in the morning.. You know how that goes..

Nicely composed. Lovely family. Sharp. You were battling some harsh sunlight.

Phones really do shine in situations like this, why cant a camera manufacture do things like a panorama mode like pretty much every phone has.

Wow. Beautiful photo of a beautiful location.

Lovely light. Great colours. No wonder compacts are dead.

yeah in phone pano mode