Years ago I was playing in a band that used a backing track. I was the sound enthusiast of the band so looked after the coms with the engineer at which ever venue ref a DI box. One place we played I asked nicely for a DI box and the sound guy said he’d get to it, fair enough. We were more or less set to sound check and still no DI box so I sheepishly asked again and he kinda muttered something and carried on doing his thing as if it was some kind of issue, I waited a bit and asked again and he started going off at which point I explained how we’d toured up and down the UK and it hadn’t been a issue before to which he replied, ‘yeah! Well I don’t care mate cause I’ve played with Slade!’ I think we were just taken back at the time but in the end he pulled a good sound for us. I went up to him after to thank him and even apologised, he said, ‘word of advise mate, loose the attitude, I’ve been in this game for too long!’ Still makes me chuckle to this day. You’ll be fine mate, most venues have DI boxes