Offdensen tends to take us at our word in this reality. No bastard children would think of cashing in on the band here, since compared to in other worlds, they're not as huge, not as famous, and certainly not as exploitable. However, just to keep things on the level, yeah, there's going to be tests and that whole rigamarole. Offdensen leaves it to me to see if you're a trustworthy person and your story is on the level, since my bullshit detector hasn't been wrong yet.
And portkeys are 99.9% safe. There are some incidents that get you teleported a couple feet off the ground, but if anyone's broken anything from it, I haven't heard of it. I haven't once heard of someone's limbs reappearing on a different part of their body due to portkey use.