Dress Too Long, possibly too late for alterations

When I bought my dress off the rack at David's Bridal back in May it fit perfectly except it was a little too long (I am only 5'2, its a common problem). My wedding is October 10 and I still have not gotten it hemmed. I am scared to have someone touch my beloved dress but I am worried about tripping and I hears that David's Bridal alterations are overpriced. I just bought heels so I don't know how long it will be with the shoes on. Anyone have suggestions? Maybe simple at home remedies. I just need to get down the aisle without tripping. The rest of the night I can hold it up if needed (we are only doing pictures and dinner, no dancing).

I included a picture of the dress (I am not wearing my shapewear in the picture so it doesn't look as good as in store).