The Licensed Vintners Association is urging pubs to make sure they re-open responsibly.
Pubs that serve food can open their doors again on Monday as coronavirus restrictions are eased.
But there are reports some owners are planning to break the 105-minute time limit for customers to stay.
Donall O'Keeffe, CEO of the LVA, says the conditions for re-opening aren't ideal.
"We fully understand the frustrations, it's a very impractical it's a very obtuse ruling that people have to pre-book for pubs in a 105 minute duration.
"For lots of our occasions, lunch on a work day, a quick bite after a workday, 105 minutes will be fine.
"But for weekend business, for family get togethers, for bunches of friends coming together, 105 minutes doesn't work at all."
