Definition. 1  Lactose intolerance refers to the inability of the body to digest lactose. 2  Lactose is the form of sugar present in milk. The enzyme lactase, which is normally produced by cells lining the small intestine, breaks down lactose into substances that can be absorbed into the bloodstream.
1 Tipping upon drop-off of your car is totally optional and is not done by the majority of drivers. Tip your valet when your car is returned to you from the parking lot.  A tip of $1 to $5 is the typical range, with $2-3 being most common.
Remember, a tip of 20% should apply to the total amount of limousine rental. While it may seem generous to tip a limo driver $20, a stretch limo could cost more than $100 per hour. If a limo is charged at $500 for the night, a 20% tip of $100 for excellent service would only be fair.