The worst I am finding now is washing her hair and swimming. That's a bit annoying preventing water going in the ear but something you just have to do. DD also is only just starting swimming lessons for the 1st time at 4.5yrs because up until the grommets went in swimming would trigger an ear infection. My older 2 children were already swimming at her age.
Yes, this!

We opted to get custom made ear plugs for her from her audiologist and I used them for hair washing and beach visits over summer. We chose to stop swimming lessons for the 2+ years DD1 had the grommets but she took it up again this year and has, so far, been good.