This is what I do, too. I've also put them in charge of sorting their entertainment bags. Mine are 10 and 12 now,so it's mainly electronics, but DC2 will bring some small toys to play with (things like SuperZings/SuperThings in a sandwich bag are a good space saver).
Spread some of the other loads between you and your husband.
We will usually:
Book it whilst sat together. I will have done all of the research ahead of time, but I love doing that, so it's no chore to me.
At the point of booking, we do it together and work through the list of what we need to book for the whole trip. Skiing is a good example of lots of moving parts with lessons/hire/lift passes to book on top of travel and accommodation.
DH always sorts airport parking if we fly.
I sort clothes and do the washing.
Packing as above
Admittedly, I do pack for DH as we share a wardrobe, and it's no bother to get his stuff out at the same time as mine. He's a simple creature who just wants a clean t-shirt and underwear daily. He has learned not to complain if I do forget something as he'll be invited to do it himself next time.
If we drive (we drive to France twice a year, once to a Eurocamp), he does all of the driving, so once we get in the car, it's over to him and I can sit back and relax.
In terms of the entertainment bag in the car, we did a long drive at Easter (14 hours spread over 2 days), and it was actually much more effective to have a big bag for life in the middle of the back seat. I chucked all the electronics plus a lunchbox each of snacks, etc, and told them to help themselves.
Easter was also the first time I implemented a packing tip to save space. Instead of suitcases, we all had a bag for life each (different colours for easy identification). All the clothes went in there. We took our own linen so that and ski jackets/salopettes/gloves went in a huge vacuum bag. That went on the bottom of the boot, and the bags for life went on top. I had a fifth bag for life that was for our overnight stop, so I only needed to get that out of the car when we arrived there. We had a holdall for 'kitchen' stuff. So teabags, washing up liquid, teatowels. The usual.
Bags for life are cavernous, and it was genuinely a game changer for ease and organisation. They're not glamorous, but who cares? Who's looking? We'd been putting our dirty clothes in one all week, so when it came to going home, that went in the car as it was, and anything clean was chucked in others. They squish down in the car so you don't end up with stuff crammed into the passenger footwells because the boot is full.
Sorry, tangent. Ultimately, get them more involved, and if you're driving, chuck everything in bags for life to save the stress of packing it all neatly.