Weddings can go ahead again from 12 April, but only in places of worship and public buildings.
Other venues had hoped to reopen too, but have been told they must wait until indoor hospitality reopens in May.
The government said the roadmap had set out which events could take place when and this plan had not changed.
“At Step 2 – no earlier than 12 April – weddings can take place in premises that are permitted to open or where a broader exemption applies such as places of worship or hotel function suites,” a government spokesperson said.
“Wedding receptions can take place outdoors only. There has been no change to this plan.”