You are going to have a great time!
I am sure that your family will be impressed with your climbing. Please take some pictures of your adventure so you can post a few here on the board.

As for my opinion on replacing the Yale Sportline. . .
I would consider Sportline akin to climbing dental floss. Try something a little more “comfy” like New England Safety Blue. Especially if you’re doing standard DRT.

If you want the madre gordo of climbing line, try some Samson True Blue (12 strand). Once you break it in and it gets a little fluffy, it’s like climbing up your living room carpet. Plush!
The down side. . .
The stuff weighs a ton and is too fat for most alloy gadgets.
(opinion questions are always my favorite)

Enjoy your vacation.
Please take a few pictures.
Regards,
-Ej-