Hi Diane. I'm always up for providing feedback when it is directly elicited. You're obviously proficient with the tool, so I won't speak to the technical side of things. However, I would like to say a word or two about the visual design of the project. As you are probably well aware, anything in SL can act as a "button" (or a "tab" in this case), so I would challenge you (and in so doing, I challenge myself because I'm often guilty of this) to explore ways of utilizing elements within your project that can serve as non-conventional tabs. Your chosen theme of milkshakes makes this quite easy as you can have the milkshakes themselves take on that role. I've tried to illustrate how this could work here:
https://360.articulate.com/review/content/62e6d61f-5dd3-4790-a0a5-b5b83d8d30b5/reviewAlso, have fun building an environment that fits the theme of your project! It's by far my favorite part of the whole eLearning process ☺