This is ridiculous if what you are asking is 'is this realistically possible'.
As a lone parent to 2, for nrly 15yrs, without any external support for at least the past 10 yrs, I've done day trips, school support, holidays, everything alone 247, 365 days a yr. It's a hard tiring life but it's completely do-able unless you have other factors eg disability, MH issues etc.
However if you're asking should you have to, assuming you have a partner, and you don't want to do these things alone, then the question is more about your relationships. With your partner or with your children depending which reason is why you'd be questioning doing such things alone with your own kids!
There's so much to be gained in investing such time & effort into activities with them to benefit your relationship with them in the long term massively, if you want that for the future.
Not RTTT so apols if I'm off target for the background to this post!