I view pretty much everything in the temple as symbolic. It's much more powerful and meaningful for me that way.
I think the symbolism of the "helper" in the temple is important and profound - and far too rarely considered as a powerful symbol. I've never worried one bit about remembering anything when I die, since even someone with severe dementia could go through the temple successfully as long as they could repeat what someone was whispering in their ear. (I know that's not the purpose of the temple, and it's not the practice in the temple, but I use it strictly to illustrate a narrow point.) I LOVE that aspect of the temple.
Since I think it's all symbolic anyway, and since I believe if any of it is literal we either will have perfect recall or someone standing next to us to help us, I don't fret about memorizing anything in the slightest. I have memorized most of the presentation, at least to the extent that I can anticipate the wording and know what's coming, but it's not something I put any conscious effort into doing. I am free to attend, try to open my mind to inspiration and simply "be" - in the presence of God.