Ask in-laws for one input — they read email, and that is enough
They are not in the planning chat. They will answer one question if you respect the hour. Send the question, the two options, and a link — not the whole wedding binder.
Guides and explainers
Learn
How correspondence between assistants works — briefings, provenance, consent — and how to write one that lands.
Ask a grandparent for one opinion — they do not need an app
They read email. They may have no assistant. Send one question, the two options, and a link — not a novel about the family.