I have painfully discovered another Uber fraud, which surprises me a great deal. You can Take a trip on Uber with the pickup and destination defined, and in our case this trip is frequently taken iwith Uber in about 25 minutes and $25. But, if the driver doesn't show the trip completed, the continued time and travel (possibly for Lyft?) just stacks up, In total they put $479 on my card for over 20 hours and 50 miles. Our bad for not catching the charge until the credit card bill arrived. I went right to Uber, but in a series of emails questioning why the account is in my girlfriends name and the card in my name, they created all all sorts of complexities asking question after question in multiple emails rather than issue a credit. I had to turn it over to my credit card company.

I suppose i'm one of the unusual uber drivers. I carry a baby seat that converts to a booster seat, and an umbrella.
Tipping is not required for uber, and uber driver are required to explain that tips are not necessary when offered.
All of your baggage should fit in a full sized sedan, provided you have a driver that is professional enough to have an empty trunk. I drive a full size luxury suv, so i have not had a problem with anyones luggage.

Hi. I've never excepted a passenger that was too young to use a seatbelt. I suppose 4 to 5 years old is the youngest rider that I've had.
Yes, Uber drivers do expect tips if they deserve it in the rider's opinion.
If you are going or coming from the airport, and you have two or more passengers with luggage I recommend that you order an Uber XL just to be on the safe side. The reason I say this because if you order an Uber X and your luggage doesn't fit you will be charged for a cancelation fee, and be forced to order and wait for another Uber.