Or is it quite normal and I'm just being miserable?
DD2 is at full-time nursery, and on the whole I'm very happy with them. But they keep having 'parties' every couple of months, starting at around 2:30pm, ending at 4:30, and they invite the parents to come. So not only does this mean that nursery effectively closes at 4:30 on those days, but we're also expected to take an afternoon off to attend. So I'm paying until 6pm, but have to take time off work and take my child home at 4:30.
Of course I have the option of not going, and I have missed a couple because of work commitments, but then I arrive to a lonely tearful child who is all sad because her mummy was the only one not at the party and all her friends have gone home!! 
I put DD2 in a nursery because I work and need her to be looked after, from 8pm to 6pm. These parties are a major inconvenience and it really bother me when they have them.
So do I have a point or am I just a miserable old trout?