The Professor notices the choice of coin, and specially that they've been invited. Oh well, next time it'll be. But now there's a drink on their hand, a hand on their waist, and such a shame would be not to employ the other hand on the Mycologist's waist in return as they go, it being so easy to seek his closeness...

"And to more experiences like this." Completing the toast with a joyful smile indeed.