Am travelling to the Baltic states and then cruising from St.Petersburg to Moscow and would like to know if I need to be wary of anything,hidden charges such as cost of drinks on board

Seems as though your cruise line should supply that info.

You pay for your own drinks at a price that is much higher than bringing your own. No problem with bringing your own, you will find a self serve market across the tram tracks at the river port in St Petersburg. Tips are extra. Most tours are included although some tour companies have optional tours.

thank-you for the info

Does the self serve market sell wine and is that okay to take aboard?

I have never had any problem taking beer or wine back on board. The self serve market across the tracks at the St Petersburg river port sells beer and wine, it should be no problem.

Important question.
We just returned from Morocco and NO problem with finding internet cafes (we had a problem avoiding them!!).
In France it was all but impossible. We finally found one in Lyons and that is after finding the other two places listed by Tourist Information were 'down'(actually the first two places had one antiquated computer and that was it!!).
We are in the middle of a real estate deal so need access to internet in Russia. Is that possible?
Thanks..and thanks for the wine info...our boat had a 'gift guide' of $25 a bottle for house red and $50 for premium.