Carrera marble kitchen counters sealers

Hi.  I live in Mexico. The house I bought four years ago has what I
have been told are Carrera Marble (http://www.lightemprador.com) Counter (http://GialloFiorito.com) tops.  Because it's impossible
to live in Mexico without using limes and (http://maplered.com) to give parties without
margaritas being spilled on the Counter (http://GialloFiorito.com) , in the past 4 years the top
has become covered in white rings and (http://maplered.com) globs.  I recently paid a Marble (http://www.lightemprador.com)
worker to completely sand (http://maplered.com) the Counter (http://GialloFiorito.com) top.  He then applied a thick
acrylic clear substance called "Sellacril--Perdera Sallador Acrilico" 
Obviously, a Mexican product.  The end result was distastrous.  The
coating is clear but also streaky and (http://maplered.com) uneven.  I was told that now the
Counter (http://GialloFiorito.com) was impermeable to lime or lemons, but the first time I used
them they somehow ate through the acrylic and (http://maplered.com) --etched into the Marble (http://www.lightemprador.com)
again.
Is there anything I could do do make them impermeable?  Or,
alternately, do you have any advice about applying the acrylic so it
isn't so streaky?  Can it be thinned and (http://maplered.com) brushed on using many coats? 
They only did one.  Spraying isn't an option as we can't take the
Counter (http://GialloFiorito.com) s off.
Do you have any products to coat it with that would be better?
In case you are thinking about suggesting that I become a neater cook
and (http://maplered.com) that guests refrain from spilling margaritas, I have to say that
this is not an option.....

Thanks very much.  Judy