You can try to cooperate with one company first, because the more you participate, the more complicated the interest dispute will be.
Some problems that need attention:
1 Your tourists must be the same level of consumer groups, so as to ensure that they will go to your two homes for consumption, instead of competing with the same industry. It is best to have two stores in a big shopping mall. Personally, I think it's good to have a daily chemical and a clothing.
There is little difference in sales between the two stores, so there will be no one-sided situation.
3 distribution of benefits, preferential part, who will pay, how much, how to calculate.
The specific thing to do is to choose partners and discuss the details of cooperation.
In fact, many places have similar models, especially large shopping malls. You don't have to use cards or coupons, you can use them for final settlement. If a card is used, the cost will increase.