Mixter Nitrogen Creamery + Coffee Jacksonville is closed on Monday. It opens at 2 PM on Tuesday, Thursday, and closes at 9 PM those days. On Wednesday and Friday, it stays open until 10 PM. Weekend hours start at 11 AM, which gives you a solid daytime option for a treat run.
If you want a calmer visit, I would aim for earlier in the day or the first part of the afternoon. The reviews do not call out long waits, but the custom order process can take a little time because each cup gets built and frozen on site. That pace is part of the fun, and it suits guests who want to watch the steps. If you come with a group, the board games can help the visit feel unrushed.
For a first order, I would start with the liquid nitrogen ice cream since that is the signature. If you want coffee, the shaken espresso caramel iced latte got strong praise from a reviewer. Vegan guests have a clear path too, since vegan ice cream appears in both the brief and the reviews. I think the first visit works best when you lean into the custom format and ask the staff for help.
The build-your-own setup suits people who want to stay and enjoy the experience. Reviews mention generous portions, so sharing can make sense if you want a lighter stop. The shop also has inside dining and a pick up window, which gives it more than one way to visit. That flexibility helps on a family outing, a date, or a dessert detour.
Accessibility is strong here. The brief lists a wheelchair-accessible car park, wheelchair-accessible entrance, wheelchair-accessible seating, wheelchair-accessible toilet, and an assistive hearing loop. That makes the shop easier to plan for a wide range of visitors. I like seeing those details in a place built around a fun, hands-on dessert experience.