Agent Ocean (Elijah Sandiford, season 2): Odd Squad's director of the creature room. Ocean has a laid-back and easy-going personality and he is friendly to the other agents. He specializes in animals/creature knowledge that Odd Squad agents may need to know. Agent Octavia (Julia Lalonde): Agent Oz's partner.
You should give it 24 hours to dry before applying tile grout, same on both walls and floor tiles, dont leave it longer than a week to grout and dont grout within 12 hours because the tile adhesive has to dry, so i would say tile and then grout the day after, giving atleast 12 hours minimum drying time, but technically do it after 24 hours.
All you need to do is leave the grout to dry before getting it wet. The instructions should tell you for how long. As you and others have pointed out drying and curing are separate things. While you can use the shower after the grout is dried you may need to leave it for a day or two after it's cured before sealing.