Presale Question

Hi, few questions before my client buy this plugin for her website..

1. can i removed the check out date? The service of my client is good for one day (tours for one day)
2. Can i make a manual reservation thru admin panel?
3. Can i enter number of days before the date can be selected?
Example: The current date is January 1, and i enter 30days..The earliest date the user can select would be Feb 1..
Is this possible?
4. Can the user cancel there reservation thru frontend?
5. Just to confirm: If the user select January 1, the other users cannot select/reserved the January 1..this is possible, right?

sorry for my bad english, hope to hear from you soon..tnx!