It's rare to see someone send bitcoin below 10 sat/vb considering how quickly the transaction fees shoot up lately. It's getting lower recently with lowest being confirmed at 8 sat/vb so you could get lucky with your ~7 sat/vb today.
If that transaction won't get luckily confirmation today, it will be either dropped of mempools or stucked for at least 6 to 7 more days before a next weekend.
Yes likely to get returned to OP's originating address once dropped from mempool.
ViaBTC managed to mine block 793858 with fees ranging from 5-65 sat/vb but it had 193 transactions only. I'm guessing those picked up txs with 5 sat/vb probably came from their paid accelerator service.