New MT3000 for travel: help with setup

Traveling to Mexico next week and ordered an MT3000 to have in our room as our travel router. I would really like to find a way to have the MT3000 VPN into either my synology running Tailscale, or into my firewall gold router so that our TV stuff still works, and we can access the home network.

Suggestions/Articles on the best way to achieve this?

Firewalla Gold? Do you already have it set up and reachable by VPN?

You might be more specific about what you mean by TV.