Disadvantages of consumer sweepstakes include the potential for misleading marketing practices, where participants may be lured in by the promise of prizes but end up facing hidden fees or obligations. Additionally, the disadvantages of consumer sweepstakes often lead to consumer frustration, as many entrants may feel their chances of winning are slim due to the overwhelming number of participants. This can create a sense of disillusionment, ultimately diminishing trust in brands that utilize such promotional strategies.