Can I set a holiday return window?
Yes - if you want to permit customers who placed orders within the month of December, for example, you can set up a policy rule to that effect.
For example, you might want to offer a 60-day return window for all orders placed in the month of December in case they were given as gifts. Having this added flexibility can help customers feel more confident in ordering your products as gifts for others, knowing that their recipients can exchange for a different size or color.
Here's how you can set this rule up: 
Please note that the time window here will override the return window in the Return Settings, as it would generally be a longer time window that the standard one.