We are not allowed, and I think it is a good idea.
The problem with a discount or a freebie is the intent, which is very hard to determine.
I know some shop owners that simply want to provide a small measure of thanks.
Some really like the extra presence.
Some may think it will get them a break on a ticket or such.
A half price meal or a coffee when provided without expectation is not graft.
When it becomes an expectation or service is not equal then the slippery slope has been touched.
In my experience it is better to steer very clear from that slope.
The problem with a discount or a freebie is the intent, which is very hard to determine.
I know some shop owners that simply want to provide a small measure of thanks.
Some really like the extra presence.
Some may think it will get them a break on a ticket or such.
A half price meal or a coffee when provided without expectation is not graft.
When it becomes an expectation or service is not equal then the slippery slope has been touched.
In my experience it is better to steer very clear from that slope.