Range for the itinerary length in number of nights.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/resources/conversion_value_rule.proto)

| Fields ||
|---|---|
| ## `max_nights` | `int32` Maximum number of days between the start date and the end date. |
| ## `min_nights` | `int32` Minimum number of nights between the start date and the end date. |