What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
It is the way that Date Reservation widget works. Once a date is picked it is counted as reserved and it becomes unavailable for further submissions.
I have navigated through some other widgets but I was not able to find one that works in a way that you'd like to use. The only work around I can think of is to use simple Dropdown fields and enable the multiple selection feature with days and months are configured. I know it is not fancy and easy compared to selecting dates from a calendar. However, please let us know if you'd want set it up that way.
Do contact us again if you need any further assistance.