Does she normally wear heels? Where are you staying and how are you getting to the grand? If you/she is walking, I highly don’t recommend her wearing 2 1/2 inch heels. Not only will they be uncomfortable to walk in, she could have a spill and hurt herself and put a damper on the night.
If you are staying at the GF and she just has to take the elevator down stairs and she has some experience walking in heels go for it.
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