appliances and grounded wall outlet

I know someone whose kitchen's wall outlet/receptacle has 3 prong connector.
However, tester show that they are not grounded.

These receptacles are in the kitchen, where there's plan to plug in (different
outlet)
- free standing gas oven/range
- refrigerator

My questions are
1. is it dangerous to run these appliances on ungrounded receptacles?
what's the risk with such setup?
2. the handyman who helped with some of the fixup said it's difficult to
"ground" those receptables. It pretty much require toring up parts of the
kitchen, where cabinets/ceramic tiles are installed, and there's no plan
to do any serious remodeling
To make things more difficult, this is a 3 floor building, where ground
floor is car garage, and 2nd and 3rd floor is residence, and this kitchen
is on the 3rd floor, and there's no plan to disturb 2nd floor at all
3. one person suggested to put a surge suppressor adaptor between the wall
outlet and appliance, in lieu of a grounded connection. Is this advisable
4. would a GFCI receptacle/extension cord help in this scenerio

I am not familiar with electric at all, so I apologize if I am asking dumb
questions. What I like to know is what options are available

a. take the risk and plug in to an ungrounded outlet
b. have some sort of workaround (adaptor/suppressor/gfci/etc), using ungrounded outlet
c. have some other set of eyes looking at the receptacle, and maybe get lucky
by just do some simple/quick wiring, and get a grounded outlet

Sorry for the long post