There is nothing tangible with the service that makes it 'worth it' given the price of other options. It's a splurge with minimal to no justification, plain and simple.
That said, having bounced around from rental cars, car services, Uber black, etc in our WDW travels.... I do value and appreciate….
- The "known entity" factor - I know exactly what kind of car I'll get, what kind of car seat I'll get, how it will be installed, etc. Mine are now out of car seat stage but that alone was important early on (yes other services offer them but quality of the car seat/installation varied, in my experience, and we just preferred having a little more control over the topic).
- I have a general level of comfort with the quality of the driver and their training. One bad situation does not justify $199, but I had an unfavorable driver situation using Tiffany Towncar one time years ago (very fast driving, weaving in/out of lanes). DS was young at the time and it just left a bad taste in my mouth. In fairness I've had numerous other driver service or Uber Black rides with my children with no issues at all (including a driver at Tiffany we had become repeat customers with for years until he moved on)
- Really picky comment here - I dislike car fragrances, and unfortunately once in a rare while in a Uber Black or car service you may get someone who enjoys, say... a more fragrant car. A 30 minute ride to or from WDW in a car with a heavily scented vehicle is like my worst nightmare. Yes, I concede that's an odd perspective here.
- I need to stay up on my Disney gossip.... 30 minutes of car time with a friendly/chatty CM can be fun. In seriousness, we've had many fantastic CMs who have made the trips very enjoyable. Many had been with the company for awhile in various roles and it's always so fascinating hearing stories and perspectives.
- Most car services will do this too, but I appreciate the whole meeting by the luggage area and quick access to the car a level down. It’s nicer that mine are older now and can handle their own bags for the most part, but early on I’d sometimes be solo with bags/kids and the helping hand of a friendly CM was welcome.
- I spend enough of my real life flying somewhere and hopping in an Uber... sometimes the whimsical nature of the service is fun/different/a nice change.
Guess I'm blabbering on a lot justifying wasting money, but hey... just one perspective.