I was just about to head up to Babies R Us to trade in for an Affix and a new question popped into my head. Is it okay to use it without LATCH, also? It would normally be latched in a captain's chair, but when I occasionally move it to the third row, it can't be latched (one set of offset LATCH). The only other LATCHable booster we've used was the Nautilus and that was fine either way, and all my others don't have latch anyway. Thanks!