If it's the one gallon "soda" kegs... They'll be quite easy for use and keeping clean and re-use... Probably use the little CO2 cartridges... Haven't a clue about them, but what I've read... Should work fine... Please get the brew, in the keg cold first, then add CO2 (carbonate).
If you can't really disassemble the keg... I'd steer clear..