Date format and validation question

Hi,

Thanks for the lovely plugin. I searched your forum and this support site. If this was already answered, sorry for asking the question again…

I have two questions about date:

1) Date format I am accepting two dates

<div class=”column-half”>Check in date [date checkindate ]</div>
<div class=”column-half”>Check out date [date checkoutdate ]</div>

in Mail, I get the date in this format YYYY-MM-DD

Check in date : [checkindate]
Check out date : [checkoutdate]

how to change the date in the email I receive to be in the format DD-MM-YYYY?

2) Date validation questions

checkindate >= today
checkoutdate > checkindate

How can I do both of them above?

Thanks in advance