Welcome to the seller community, @allenmore, and thanks for your post!

As long as you have a strong data or WiFi connection, you'll be able to process payments immediately. We do also offer the ability to accept card payments with Offline Mode, though you'll need to make sure you're able to reestablish your connection within 72 hours. Learn more about how it works in this thread: Offline mode AND no location services.

Hope this helps clear things up. Please let me know if you have any further questions!