Paver patio laid over original concrete? (washing, between, sealer, sanding)

[loves2read]

We had this done in FL vacation house and think the sanding was not evenly done...
now they have sealed it --did it 48 hrs after sanding and washing--
and are telling me that once the sealer is applied the sand won't wash out or the pavers lift...
but they agree there is uneven sanding across the patio

anyone have photo of what your pavers look like
did you get consistent level of sand between pavers or am I asking for something impossible?

[HX_Guy]

I have some friends who just had this done, I'll ask them about it. I do remember they had some issues with the sand and they had to reseal it or something along those lines.