> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/HotelAdvanceBookingWindowInfo).

Criterion for number of days prior to the stay the booking is being made.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/common/criteria.proto)

| Fields ||
|---|---|
| ## `max_days` | `int64` High end of the number of days prior to the stay. |
| ## `min_days` | `int64` Low end of the number of days prior to the stay. |