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.
Clearly, a wide gap exists for how much you should tip hard-working service-sector employeesâor whether they should even be tipped at all. In order to help put your mind at ease the next time you hire a taxi or town car and limo service, we thought weâd help remove any confusion surrounding three main questions: 1  Should you tip a taxi or limo driver? 2  When is it appropriate to tip?  How much should you tip a taxi or limo driver?