🌏Can I set the service to a specific location so that bookings cant come in from far away?

Requires a third party application

To restrict clients from specific locations you will need to use a third party application such as LockOn or something similar

The goal would be to restrict people from specific locations from entering specific pages on your Shopify store

LockOn‑ Restrict Store - Lock Shopify Store | Content Restriction for Shopify | Shopify App Store