Whilst it may seem like a dumb question but how hot is hot? Given that you are wearing the aligner, the sensation of hot and cold is going to be dampened by them, whilst your tongue and other oral tissues are not covered by them, you can risk burning yourself at least once! . That said, it is not recommended to have hot drinks or anything which may stain your teeth whilst wearing the aligners as it will actually take the shine off the aligner making it more noticeable. So whilst you can have the odd drink or two, i would be careful about frequent drinks. Perhaps when it is coming time to change the aligner, you can indulge yourself a bit, and you will eventually find what works for you!

Hope that helps, but any further questions, please do not hesitate to ask!

Regards