If the rules are passed, merchants would not be able to give away free refills or top-ups of sugary drinks.
According to the plans, multi-purchase promotions like buy one, get one free will also be forbidden.
However, there will be a 12-month period during which product packaging can be changed before the regulations take effect the following year.
When it comes to dining out and shopping, the Welsh government says it wants to support its citizens in “making the healthy choice.”
Businesses who disregard the Food Safety Act may be subject to a criminal penalty in addition to receiving an improvement notice.
The Welsh government confirmed that local councils would be in charge of enforcement.
Before the year ends, the Welsh government plans to submit the measures to a vote in the Senedd.
Eluned Morgan, the health secretary for Wales, claimed that advertisements were “very effective” at influencing people’s purchases of food and beverages.
“I am determined to support the industry to increase the pace and scale of action to produce and market healthier food and drink products,” she stated.