Is time and money great for Romance YEAH. But it's not required. If you if yours and your lover's time tables don't allow for a real date night 'He's off Wednesday and Friday your off Monday and Sunday' don't plan for a date night. Plan us time instead. If it's a couple of hours after the kids are in bed and a couple hours before he has to go to his night sift take the time to draw him a nice hot bath, light a couple of candles on the counter and join him for a little 'Cleaning up' before he has to leave. Or on your day off 'if you can get one' Pack up you darling children for a sleep over at grandmas, do a quick spring clean 'because you will both be more relaxed if there aren't toys and work stuff all over the living room, dining room' and fix a late/early dinner or lunch for when ever he gets home. Make a simple dinner for the two of you. Brake out the wine and those chocolates you've been hiding from the kids and forget yourselves for a couple hours.
Even if your tired it can be worth it. I'm not saying do this everyday. But taking a little time once or twice a week to do this can do wonders for how you feel about yourself and your relationship. And some times after you have kids it's just good to remember you do have a relationship too.
I know these are really basic but it's stuff we all forget about in the day to day grind we can do to remind him and ourselves we're still living breathing, needing humans and not just the roles we play day in and out. Just do whatever you can with the little time you have to remind him he is MAN and you are Woman.