Last year I placed an order for a custom strapless sweetheart sheath dress with lace and ivory/nude tulle. It comes with a de-attachable aline skirt for a second look. This was done out of the country with the expectation that I'll go in for the fitting and pickup when we go visit my fiancé's family. However, it doesn't look like the ban of travel to other countries is going to be lifted any time soon and I plan to keep my April 23, 2021 date for the elopement / micro wedding. I'm going to have the boutique ship the gown here instead, but since I'm doing the measurements myself, I'm worried that it won't be precise and that the strapless look wouldn't sit well. I'm not sure if there will be enough time for me to take it to a tailor here to get it adjusted.
As such, I'm contemplating whether to request an illusion neckline to be added so that the fit is more forgiving. Some photos below. Would appreciate it if anyone can share their experience with an illusion neckline and whether it's more comfortable than strapless.
Original Design
Options for illusion neckline
