Older venues may have limited power supplies for large scale productions likewise, their toilets may be inadequate if you are expecting large numbers of people.
Mae'n bosibl bod gan leoliadau hŷn gyflenwadau pŵer cyfyngedig ar gyfer cynyrchiadau ar raddfa fawr, yn yr un modd, mae'n bosibl nad oes digon o doiledau yno os ydych chi'n disgwyl nifer fawr o bobl.