You can travel to a ceremony across 'levels'
We can travel for your ceremony (Wedding and Funerals) across Scotland. You and your guests can travel to attend the ceremony. Some detail below for ceremonies (From Scottish Government).
Referring to "Travel ban in law"
Exemptions for all levels include to attend gathering related to funeral including scattering of ashes.
In level 4 travel exemption is to attend a marriage ceremony only. So if you are level 4 and wedding is level 3 or below you can only travel outside level 4 to attend the ceremony not reception.
WE WILL GET THERE I PROMISE