Try not to throw up over a lady.
Worst ‘drinking on my own’ experience was in a hotel in Vienna. Had bin out to a concert of Mozart music, had a wander around but it was quite late and nothing seemed to be open except the hotel bar. Which had only a couple of solitary business traveller types sitting in it, who I din’t really want to talk to. Had one (really nice) beer there, then took the next up to my room, and watched a bit of Austrian telly.
I spose a nice pub somewhere interesting would be ok, but a near-empty hotel bar is such a soul-destroying place. You’d meet people like CFH ffs…