We went with 6mth old DS. Got there on Wednesday when it was nice and dry and got a good pitch in the family camping area.
We bought a 2nd hand 3 wheel all terrain buggy for £20 off someone on here and it got through the mud fabulously. Didn't get stuck once!!! We also took a ringsling which I only used a couple of times as I was worried I would lose my balance in the mud and fall with DS attached to me.
We never took DS anywhere where it was too noisy or crowded and stayed at the back of the crowd when we were watching a band. He was perfectly fine. Wrapped him up in his waterproofs, bobhat and a blanket and he was cosy. Arcade Fire were on at 9.30pm and he slept through that then we took him back to the tent. That was the latest we kept him up and he slept fine in the tent. Made some great friends who were camping across from us and we sat around a fire chatting and drinking wine in the evenings while our children were asleep. It was lovely.
Mendip NCT did a great job with their tent - lots of toys and mats on the floor for the babies and they offered out cups of tea and coffee. We would take DS out and about for a couple of hours then head back to the NCT tent so DS could have a play while we had a brew.
We came home Sunday afternoon as we felt like we had had our fill - seen some weird and wonderful stuff and didn't want the rain and mud to start dragging us down and also to escape the rush to get out on Monday.
We had a great time and recommend taking a baby. Definitely going next year but DS is going to my parents. I won't be breastfeeding then and he will be toddling about. It would be too much hard work with an 18mth old.
Don't understand all of the uproar on the BBC website - like someone said, it is just like a camping holiday but a bit louder and busier (and okay, a bit muddier). You can make Glasto as chilled or as hectic as you want it to be. There is something for everyone and that is the beauty of it.