Let toddler play in ball pit two weeks before big move?

We also have a baby at home and are moving without any help and if my toddler gets sick we won't make it.. grandparents want to take her to an indoor playground with huge ball pit. But we told them no because we are afraid she will get sick right before the move!! We are so stressed right now having a sick toddler and possibly a sick baby would be hell. Are we crazy?! She's never been in a ball pit before and has been fairly sheltered germ wise..

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