I'm with you on the cultural bully OP.
We went to Sicily in August and arranged to meet a new friend (ahem) who was going to be there at the same time.
As time went on, we thought: 'Fucking hell. She's hard work.' But we were staying in Taormina for two weeks and she was only passing though for two days on a cultural tour of the island (naturally), so thought it wouldn't be that bad.
Sicily in August is hotter than hell. We barely moved from the pool. Even at night it was so hot that one night we asked for an ice bucket and dunked napkins in it to lay on the backs of our necks.
On her first day she arranged to meet us in the botanical gardens at 10am. We negotiated 10.30am what with it being a holiday, not a school trip. She moaned. It was sweltering. And it's just flowers.
We moved on to the amphitheatre and got there just as the sun was reaching its zenith at midday. It was so fucking hot I swear I heard the sun zinging off the stone. You couldn't take off your sunglasses because you'd have been blinded.
I'm pale and was worried about burning even though I had high factor lotion on. She scoffed. She is dark skinned. And again, it's just ruins.
That evening she insisted on a route march of the town so when we were eventually allowed to sit down I was covered in sweat with my make up sliding off. She then inflicted her bad Italian on the waiter, who spoke great English, and got angry with him for not understanding her accent. I bet he spat in our drinks.
The next day she wanted to set off at 8am for the train to Mt Etna. I point-blank refused. She asked me why I'd come to the cultural treasure house that is Sicily if all I wanted to do was lie by the pool. I don't know how I kept my hands off her. It was too hot for physical violence, I suppose.
BTW, DH and I went to the amphitheatre again one evening to see a ballet of Romeo and Juliet (Taormina has a brilliant cultural festival in August, if you can stand the heat). It was a wonderful production, a beautiful setting, and slightly less than roasting.
We saw a shooting star at the beginning of the performance which seemed like God's reward for us putting up with this person instead of sending her to sleep with the fishes.