This holiday is within our price range, provided we don't frequent the expensive restaurants. What is an accurate rephrasing?

The correct rephrasing conveys the idea that the holiday is financially manageable, with the understanding that avoiding expensive dining options makes it affordable. The phrase "can afford this/the holiday as/so long" effectively captures this conditional statement, indicating that the ability to afford the holiday hinges on a specific action—namely, not eating at costly restaurants.

This wording succinctly combines the notion of affordability with the condition that allows for it, maintaining the original meaning while changing the structure. The other options, while they may suggest variations of enjoying or being able to pay for the holiday, do not align as closely with the specific condition presented in the original statement. This aspect of conditional clarity is essential for accurately representing the original intent.