Shops are expecting a very busy few days ahead as non-essential retail opens for the first time this year.
The latest easing of Covid-19 restrictions is allowing customers without an appointment to go into a store.
Shoppers are being urged to stay patient with staff, while also practicing social distancing.
Meanwhile, people in their 40s will find out later this week when they can register for a Covid-19 vaccine.
The HSE is currently working through people aged in their 50s while new guidance on the usage of the Johnson and Johnson and AstraZeneca vaccines is due to be announce this week.
There were 355 new cases of Covid-19 on Saturday and 447 as of midnight on Friday, after a delay in releasing figures due to the HSE cyber attack.