I agree with COG, if your son wants to go I'd let him. I think it's a great chance for some father/son bonding and some quality time with relatives.
Just hang in there with all the other stuff. Eventually that tatoo will come off. My husband would probably procrastinate and be lazy about something like that. I don't think it's because of there's emotion tied to it, it's just one of those hassles he'll eventually get to.
There is no arriving, ever. It is all a continual becoming.