Unless you know that row 30 on that aircraft is reserved for crew bags / emergency kit / baby life rafts / blankets etc. There is one aircraft I fly on from time to time, that has one of the overheads over the bulkhead filled with emergency equipment, meaning that, given there is no floor storage on the bulkhead, the bulkhead passengers have to put their bags a row or two back. I think it is a silly design, but as I like the bulkhead, I try to ensure I board as soon as permitted to pop my stuff in an overhead close to me - but if not, the FAs have never had any issue with me popping my bag in the last bin of FC.