Cancelling one's booking before entering the Rowdhatul Jannah and wearing ihraam to perform tawaaf on the mataaf

Q: In Musjid Nabawi صلي الله عليه وسلم, there is an app which allows a person to enter the Rowdhatul Jannah once a month by making a booking. What is common is to cancel the booking after the guards check, allowing one to book for a second time in the next week. Is it fine to do this, or will it be considered as deceiving the people of Madinah Munawwarah?

Furthermore, when in Makkah Shareef, one is only allowed to make Tawaaf on the Mataaf if in performing Umrah and in the state of Ihraam. What many do, is wear the Ihraam to Tawaaf on the Mataaf. Is this permissible?