We went to DS's Summer concert last night. This is a big event for the music department and the children who perform.
My judgey pants were pulled well up at the couple who arrived with two younger DS's (about 7is) in tow, plonked themselves in the front row then fished an iPad in a luminous green case out of a bag. The two boys then spent the whole concert playing a game that involved much waving of arms. All the time they were sat in front of the stage, in direct eyeline of the children performing 
In fairness they had the sound down, both boys stayed in their seats all the way through the concert and apart from the occasional muffled gasp or cheer they were quiet. I also realise that expecting DC to behave themselves through an event like that is easier said than done, and don't necessarily judge the parents for using an iPad to keep them entertained. It's more the inconsideration of allowing them to distract the performers as well as the audience several rows behind them.
So AIBU and curmudgeonly or was this unnecessarily rude and thoughtless?