Hello,
When we inspected the site URL you have provided we found date ’16’ as available date for booking of trip as you can see in screenshot below.
https://prnt.sc/wmjozq
Actually, among the multiple dates you have added starting date of first departure date will be displayed as available date in calendar section. when first date will be expired second departure date(starting date) will be displayed as available date in calendar section.
Further, if you want to display all the dates between starting date and ending date as available dates in calendar section then you have to use recurring feature.
For detail assistance regarding recurring feature, please refer below given link:
https://wptravel.io/recurring-dates-feature-for-your-trip/
If you have any queries further, please let us know.
Thank you.
