It might make more sense for Stabler to simply show up in “Wolves In Sheep’s Clothing” as a guest at Fin’s wedding.
And hey, it would be nice if he got to attend an occasion that doesn’t get ruined by crime, after the plan to attend Benson’s award ceremony fell apart (and launched a spinoff).
Despite all the awkwardness of him returning after nearly a decade away without staying in touch with Benson and Fin, they all seem to be on good enough terms with each other, so it would only be natural for Stabler to score an invite.