Not sure I am understanding your question. This is me... but if I were coming from FL and had never been to Yosemite, I'd leave from Glacier Pt even though Happy Isles is the "official" start. But that's me. Looks like it is about 7-7.5 miles from Glacier Pt to camping in Little Yosemite Valley.

I'm trying to convince my son that he can visit Yosemite and make a little $ shuttling you. However, the American school system has left him with a severe case of Stranger Danger. Can you convince me that you are not a serial killer? lol

I'd offer to shuttle you myself, but I am planning on being on trail in Sequoia.