Is it possible to have real time tide station information show on my fishfinder (Lowrance Elite TI) when using Reefmaster charts, the same as it does when using a Navionics card?

That's not a data object that the IMC is programmed to generate.

Is there any way of getting tide stations while using Reefmaster charts?

Not on a Lowrance. At least not as a tide graph is normally presented. All chart objects are generated using the IMC as a compiling software. Reefmaster wouldn't be able to prepare it for conversion if there was no compilation to get it on target.

People used to use tide tables so I'm sure you could produce a very rudimentary version of one of those at great pain.