For almost the same as the tip I give to my towncar driver, I can get my groceries delivered to my resort. I normally tip my driver about $25, on top of the over $100 charge. But, for my grocery delivery, there is a $12 delivery charge and I add a $5 tip. And, I don't have to waste time shopping in an unfamilier store, I don't have to lug the groceries around.
Which is faster? This has been my experience to date...deplaning to resort checkin.....
with checked luggage....
DME...about 70 mins (usually about an hour but one longer trip puts the average at 70 mins)
Towncar....55-60 mins
carryon only...
DME....same, about 60 mins
Towncar...45 mins.
If you have checked luggage, you will add about 15-20 mins to your time, then about 5-10 mins for the driver to get the car and load it.
Now, I always use DME and order my groceries from gardengrocer.com.