Continuity mistake: When Dracula and his architect are going through blueprints of the hotel, Dracula is seen with a coffee in his hand. Mavis spits from the ceiling and it drops down to the table where the blueprints are. When they scan up to Mavis he has coffee, when they scan back to Dracula and his architect there is no coffee in his hand.
Continuity mistake: When Dracula is heading towards Mavis' room, one of the rooms he walks past is Room 174. When he finally reaches Mavis room, her room number is also 174.
Continuity mistake: When everybody is playing bingo, the word bingo is placed correctly on the cards but none of the bingo numbers are in the right place. Plus, when the bingo lady calls out the numbers, everybody is stamping the number that was called under a different letter. Ex. When the bingo caller calls out N-27, Eunice stamps the number 27 but the number where she stamps it is under the letter I.
Continuity mistake: The length of the corridors and passages inside the hotel are much longer than the outside of the hotel itself.
Answer: There's a scene where he's wearing swim trunks which are visible, but he gets embarrassed when they're pulled down and he runs away. Obviously just meant to be a gag, but if the thought of people "seeing" him naked embarrassed him, one would think he must normally be dressed in clothes that can't be seen.
Bishop73