Oh Ellie I just had to reply to this to make you feel better hun because there is nothing worse than that sinking feeling when transporting a cake.
I don’t ever think you stop worrying but you do learn from experience. I once full assembled a cake then got to the venue and realised the table was a tall table that I could just reach. Had to lift a four tiered cake up and the whole thing almost leaned against me, was so worried all the large roses were going to fall off and the tiers would slide off but thankfully it was ok.
Last year I had a cake that went all soft because it was one of the hottest days in the year and so since then I always use ganache especially for tiered cakes and wedding cakes.
From reading about other (famous) cake decorators who had disasters though the best thing is not to panic and to try and cover up and damaged areas. Most of the time people won’t notice. Always take things with you, extra flowers and bits to decorate/patch up areas of repair.
Bless you, I am already stressing about taking seven tiers to a wedding end of July for a trip that is over 2hrs! I really hope its not too hot and my husband has already tried to reassure me that the air conditioning in his car is much better than mine and that the cakes will be fine :)
I am delivering a cake in September where the bottom tier is a 12inch fruit cake so its going to be really heavy. As my wrists are fairly weak any way I am getting him to come with me to assemble that cake there. It will be too heavy fully stacked as it has 6 tiers so I am doing it there and giving myself plenty of time to decorate at the venue.
Hope all that helps, big hugs hun. Ax
Simply Alpa