I've never regretted taking my DCs on holiday, but thinking back to the two holidays when they were 18m, they weren't exactly restful...
DS1 had multiple food allergies. AI abroad was out of the question. SC was the only safe option. Unfortunately he was allergened due to mis-information a couple of days going away, so the holiday involved a lot of screaming from abdominal cramping, and extensive use of the washing machine to deal with the aftermath of umpteen neck to knee poonamis.
I was also pregnant, very queasy, had thrush and ended up having to visit a hospital because the pharmacy wouldn't treat it and told me to go to my GP... who was 350+ miles away on another island of the UK...
Memorable... but not for the ideal reasons.
Definitely same shit, different location in a very litteral way.
DS2 was newly walking at 18m and in headless chicken mode (with turbo). DS1 was 3. We had to have a clear 1:1 policy on supervising each child to make sure that DS2 in particular didn't bolt off head first into the nearest swimming pool (he already had form...) DS1 had grown out of most of the allergies so we did do a foreign AI. TBH there wasn't that much to do there with such young children. DS2 also still woke for night feeds.
DS1 has memories of the holiday, but it wasn't relaxing at all for parenting safely.
I didn't have an "ahhh" moment on a family holiday until they were 5/7 on a camping holiday and old enough not to be scruitinised constantly.
Other "memorable" holidays include the one where DS's asthma flared partway through and he couldn't get too hot, or transition into air conditioning... interesting when camping in a heatwave... The icing on the cake of that one was MiL dying, having to cut short to be able to get to her funeral. The 7hr journey home on a 33⁰C day was a delight when he began wheezing every time we had a toilet stop. So no, not a relaxing family break.
Now we're into the teenage years and it's slightly like the toddler years of trying to find mutually enjoyable things to do together, but at least we can leave them for a while and please ourselves more!
Finding family holidays logistically hard work isn't about a lack of love or planning. Some families just have more complex circumstances. We're not all in the same position with the same options.