On-Call / Weekends, tedious paperwork
On Call and Weekends can be traded/given/taken but are unavoidable if you don't want them. It's sometimes hard to find people to take or trade with.
The tediousness of the paperwork when I was there was a main complaint but in reality only took about 10 minutes per job/day.
Main argument for the negatives would be cut-overs. Occasionally you are asked to help the construction team by cleaning up how the fiber looks from the ground to the box (2-4feet span~). These typically take about 30 minutes tops but drive time and losing those few minutes of break time just add a bit more to the workday.
Pretty fast-paced days, you are expected to be busy during any down-time you have (reasonably). Make some friends and don't expect a lot of free time and this becomes less of an issue.