Thanks Bryan, I have solved the 2 issues , following your instructions.
1. Marked OFF Required from duration
2. Place the booking info to the top and tested with paypal sandboxx all was fine.
I have used the layout imported from demo content, why they do not include the booking button part as default?
2 I see you solved most problems, are you up for a job if I need a customization?
3. I will open another tickets with generic questions about installation, cause have some doubts.
Thanks a lot