Alarm base for cellular service only

I would like to have the backup cellular service for my wireless cameras. I understand I need the alarm base for the cellular service. I do not want an alarm system activated. Is it possible to just use the base for cellular service without having to setup an alarm system that someone could trigger?

This is for a vacation home so I do not want guests touching an alarm system or sharing a code with them

I understand I have to pay for it. I am strictly asking about functionality. Can I have the alarm off ALWAYS but the cellular service on always.

What is the smallest alarm system package I can purchase that would get me the cellular service? Ring support was trying to direct me to a large package with many devices. I wasn’t sure it was the right fit for my needs subscribed above.

I know the subscription I need, but confused on the devices I need.