First of all thank you very much for using the plugin.
As for the query about the travel date, the dates that you have selected will be displayed i the cart page but not in the checkout page. Further, the dates will also be available in the email and booking listing at the backend.
Regarding your second query, the feature is not currently available in the plugin but if you wish then you can hire our professional developer.
To hire a developer, please follow below given link: