1) The differences between a remote and contact program is usually the amplitude, offset, and contact related settings, like amplitude ramp, etc.
However, those advanced settings like ramp, reduce amp, and swap waveform are not transferred to the generator for standalone mode.
Therefore, when you load either, the main difference will be amplitude and offset.
If you use a remote setup that uses 5v in contact mode, it will not have enough power to penetrate the skin.
On the other hand, a contact setup using 20v will work just fine in remote mode.
One thing to consider is if you load low frequencies to the generator for standalone use, there will be no measures to protect you from feeling the shock.
Use of the CS port for contact on standalone is highly recommended when using low frequencies, or transpose them higher using a frequency limit when loading to the generator.
2) More information regarding standalone mode.
Standalone mode is not going to have the ability to replicate all the advanced processing of the software.
It is limited to fundamental frequency generation on Out 1, with Out 2 being inverse+synced.
So no presets that have Out 2 doing something different.
You can not have wobbles, etc.
The standalone preset only transfers the following parameters:
Waveform, Amplitude, Offset, Duty Cycle, Gate and Dwell along with the list of the fundamental frequencies in the frequency program loaded in the preset.
For more details, please check: