Doing the walkthrough

[Bienes Raices]

I'm planning on doing a walkthrough of the house with a checklist so that it should be clear what things were worn out, etc. before they moved in vs. when they move out.

They are meeting with me to sign the lease and give the money on the 18th, because that's when they both can meet, and the husband (alone) is moving the stuff in on the 20th, the date when the lease begins.

Is there a problem with doing the walkthrough on the 18th, when they are both there, so that they can both sign it? Or would it be better to wait until the 20th and have the husband only, sign it, on the first day of the lease?