No, just do it, there will be no minimum consumption, just order wine. General bar consumption is divided into regions. Some people sit at the bar for free, and no one says this.
Getting stuck is not the same as leaving the station. VIP cardholders have a V-bar, a half-card, a scattered table, and no minimum consumption. Suitable for two people, one person makes a bottle of beer, about 400. The consumption in bars all over the country is the same, and there is not much difference.