Even after that Beo 4 accident: Merry Christmas.
If you have the time: Remove the batteries, open it with a screwdriver, disassembly it carefully while, put the mainboard with keys and LCD into a pot of crude rice (NO, don't cook it) π and leave it there a day or two. Casing, rubber keypad and front plate can be dried with a towel or carefully on heater.
You may use some isopropyl to clean the mainboard to get rid of water before putting it into rice. Don't let the isopropyl run into the LCD.
good luck and don't bother anymore. Try to relax with your family and after the feasts: Go and buy a backup remote (or 2) just in case. ;)