Correction. Page is adventureatxrentals.com
Hello @adventureatx
Thank you for contacting us, It seems your WooCommerce Pages such as Cart, and Checkout is being redirected to AMP on Mobile.
You can simply turn off the Mobile Redirection from AMP->Settings->Mobile Redirection (toggle off) -> Save
You can learn more about Mobile Redirection on our website
We also noticed that you are using WooCommerce.
The WooCommerce is not yet fully compatible, but it can be configured to work at a basic level.
1) I will suggest disabling AMP on cart and checkout pages

2) Update cart behavior settings to redirect on adding a product in cart and disabling Ajax add to cart check on from Archive.

Additionally, I will suggest using the AMP Enhancer plugin, it can help you in addressing some Incompatibilities in WoCommerce.
@adventureatx As we didn’t receive a response I’ll mark this as resolved. Feel free to open a new support topic if you require any further assistance.