baymule
Garden Master
That is beautiful!
Looks great Collector!
I think it will be fine w/o an acid wash.
DH has been a tile setter for... um...48 years, give or take. I can only remember a few times he ever had to use muriatic acid, and it's been a very long time since then.
The best thing in grout is colored. No more scrubbing with tooth brushes to keep white.