Wales’ 17-day “firebreak” lockdown will start later as people are told to stay at home and pubs, restaurants, hotels and non-essential shops will shut.
The Welsh Government’s new restrictions are aimed to “slow” the rise of Covid-19 cases and hospital admissions with a “short, sharp” lockdown.
Economists have warned the lockdown may cost the Welsh economy more than £500m.
Gatherings indoors and outdoors with people not in your household are banned from 18:00 BST until 9 November.
People can be fined £60 for a first coronavirus restrictions offence, up to a maximum fixed penalty notice of £1,920. But if prosecuted, courts can impose an unlimited fine.
Primary schools will reopen after next week’s half-term break, but only Years 7 and 8 in secondary schools can return at that time under the new rules.