At most hotels, a credit or debit card is required to allow incidental charges (like phone, movies, mini bar, room service) to the room.

Listed below are a list of the amounts that are required to be available.  Keep in mind that there may be different options depending on your hotel; as some may allow a (typically smaller) cash deposit or the option to disable incidentals entirely. Also remember that the hotel will also take the remaining amount of your stay in addition to the deposit. Any unused portion of the deposit will be released upon check-out.

Policies vary and this list is based on current information available. If a particular hotel of interest in does not have an amount next to it, feel free to contact them and then edit this article with any new information that may be gathered.

Strip - West Side

 Hotel
 Deposit Required
 Stratosphere ?
 Circus Circus
 ?
 Mirage ?
 Caesars Palace
 $100/nt or $200/stay cash for phone and movies only
 Bellagio $200/night - can disable if room is prepaid
 Vdara ?
 Aria $130/night or $200/night cash
 Monte Carlo $50/night or $100/night cash
 New York-New York Not required unless staying in a suite, the deposit is $75/night.
 Excalibur $20/night - can disable incidentals at check in
 Luxor $100/night
 Mandalay Bay and THEhotel $100/night

Strip - East Side

 Hotel  Deposit Required
 Sahara ?
 Riviera ?
 Encore and Wynn
 $200/night
 The Palazzo and The Venetian
 $150/night
 Casino Royale ?
 Harrah's $100/night or $100/stay cash for phone and movies - Optional
 Imperial Palace
 $100/night or $100/stay cash for phone and movies - Optional
 Flamingo $100/night or $100/stay cash for phone and movies - Optional
 Bill's Gamblin' Hall
 $100/night or $100/stay cash for phone and movies - Optional
 Bally's $100/night or $100/stay cash for phone and movies - Optional
 Paris $100/night or $100/stay cash for phone and movies - Optional
 Planet Hollywood
 $100/night or $200/stay cash for phone and movies
 MGM Grand

 $200/stay or $100/night cash